ORGANOMETALLIC COMPOUND, AND ORGANIC LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING THE SAME

Abstract

An organometallic compound represented by Formula 1, an organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode and including the organometallic compound represented by Formula 1, and an electronic apparatus including the organic light-emitting device are provided.

##STR00001##

Claims

1. An organometallic compound represented by Formula 1: ##STR00197## wherein, in Formula 1, M.sub.1 is platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm), A.sub.10, A.sub.30, and A.sub.40 are each independently a C.sub.5-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, Y.sub.10, Y.sub.20, Y.sub.30, and Y.sub.40 are each C or N, Y.sub.21 is C(R.sub.21), N, or C, Y.sub.22 is C(R.sub.22) or N, Y.sub.23 is C(R.sub.23) or N, Y.sub.24 is C(R.sub.24) or N, Y.sub.25 is C(R.sub.25) or N, and Y.sub.26 is C(R.sub.26) or N, T.sub.1 to T.sub.4 each indicate a chemical bond, L.sub.11 to L.sub.14 are each independently a single bond, *O*, *S*, *C(R.sub.1)(R.sub.2)*, *C(R.sub.1)?*, *?C(R.sub.1)*, *C(R.sub.1)?C(R.sub.2)*, *C(?O)*, *C(?S)*, *C?C*, *B(R.sub.1)*, *N(R.sub.1)*, *P(R.sub.1)*, *Si(R.sub.1)(R.sub.2)*, *P(R.sub.1)(R.sub.2)*, or *Ge(R.sub.1)(R.sub.2)*, a11 to a14 are each independently 0, 1, 2, 3, 4, or 5, R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 are each independently hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylthio group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylthio group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a, Si(Q.sub.1)(Q.sub.2)(Q.sub.3), B(Q.sub.1)(Q.sub.2), N(Q.sub.1)(Q.sub.2), P(Q.sub.1)(Q.sub.2), C(?O)(Q.sub.1), S(?O)(Q.sub.1), S(?O).sub.2(Q.sub.1), P(?O)(Q.sub.1)(Q.sub.2), or P(?S)(Q.sub.1)(Q.sub.2), b10, b30, and b40 are each independently 1, 2, 3, 4, 5, 6, 7, or 8, two or more of R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 are optionally bonded to each other to form a C.sub.5-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, R.sub.10a is: deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, or a nitro group, a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, or a C.sub.1-C.sub.60 alkoxy group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, Si(Q.sub.11)(Q.sub.12)(Q.sub.13), N(Q.sub.11)(Q.sub.12), B(Q.sub.11)(Q.sub.12), C(?O)(Q.sub.1), S(?O).sub.2(Q.sub.11), P(?O)(Q.sub.11)(Q.sub.12), or any combination thereof; a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, or a C.sub.6-C.sub.60 arylthio group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, a C.sub.1-C.sub.60 alkoxy group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, Si(Q.sub.21)(Q.sub.22)(Q.sub.23), N(Q.sub.21)(Q.sub.22), B(Q.sub.21)(Q.sub.22), C(?O)(Q.sub.21), S(?O).sub.2(Q.sub.21), P(?O)(Q.sub.21)(Q.sub.22), or any combination thereof; or Si(Q.sub.31)(Q.sub.32)(Q.sub.33), N(Q.sub.31)(Q.sub.32), B(Q.sub.31)(Q.sub.32), C(?O)(Q.sub.31), S(?O).sub.2(Q.sub.31), or P(?O)(Q.sub.31)(Q.sub.32), and Q.sub.1 to Q.sub.3, Q.sub.11 to Q.sub.13, Q.sub.21 to Q.sub.23, and Q.sub.31 to Q.sub.33 are each independently: hydrogen; deuterium; F; Cl; Br; I; a hydroxyl group; a cyano group; a nitro group; a C.sub.1-C.sub.60 alkyl group; a C.sub.2-C.sub.60 alkenyl group; a C.sub.2-C.sub.60 alkynyl group; a C.sub.1-C.sub.60 alkoxy group; or a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, each unsubstituted or substituted with deuterium, F, a cyano group, a C.sub.1-C.sub.60 alkyl group, a C.sub.1-C.sub.60 alkoxy group, a phenyl group, a biphenyl group, or any combination thereof.

2. The organometallic compound of claim 1, wherein M.sub.1 is Pt, Pd, Cu, Ag, or Au.

3. The organometallic compound of claim 1, wherein A.sub.10, A.sub.30, and A.sub.40 are each independently a group represented by any one selected from among Formulae 2-1 to 2-43: ##STR00198## ##STR00199## ##STR00200## ##STR00201## ##STR00202## wherein, in Formulae 2-1 to 2-43, X.sub.21 to X.sub.23 are each independently C(Z.sub.24) or C*, wherein at least two selected from X.sub.21 to X.sub.23 are C*, X.sub.24 is N*, and X.sub.25 and X.sub.26 are each independently C(Z.sub.24) or C*, wherein at least one selected from among X.sub.25 and X.sub.26 is C*, X.sub.27 and X.sub.28 are each independently N, N(Z.sub.25), or N*, X.sub.29 is C(Z.sub.24) or C*, wherein: i) at least one selected from among X.sub.27 and X.sub.28 is N*, and X.sub.29 is C*; or ii) X.sub.27 and X.sub.28 are each N*, and X.sub.29 is C(Z.sub.24), Z.sub.21 to Z.sub.25 are each independently deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkenyl group, a C.sub.1-C.sub.20 alkynyl group, a C.sub.1-C.sub.20 alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a phenanthrenyl group, an anthracenyl group, a triphenylenyl group, a pyridinyl group, a pyrimidinyl group, a carbazolyl group, or a triazinyl group, c21 is 1, 2, or 3, c22 is 1, 2, 3, 4, or 5, c23 is 1, 2, 3, or 4, c24 is 1 or 2, and * indicates a binding site to a neighboring atom.

4. The organometallic compound of claim 1, wherein two of T.sub.1 to T.sub.4 are each a coordinate bond, and the other two of T.sub.1 to T.sub.4 are each a covalent bond.

5. The organometallic compound of claim 1, wherein L.sub.11 to L.sub.14 are each independently selected from a single bond, *O*, *S*, *N(R.sub.1)*, *C(R.sub.1)(R.sub.2)*, *Si(R.sub.1)(R.sub.2)*, and *B(R.sub.1)*.

6. The organometallic compound of claim 1, wherein a11 is 0.

7. The organometallic compound of claim 1, wherein R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 are each independently selected from: hydrogen, deuterium, F, Cl, Br, I, cyano group, a C.sub.1-C.sub.20 alkyl group, or a C.sub.1-C.sub.20 alkoxy group, a C.sub.1-C.sub.20 alkyl group or a C.sub.1-C.sub.20 alkoxy group, each substituted with deuterium, F, Cl, Br, I, a cyano group, a phenyl group, a biphenyl group, or any combination thereof; and a group represented by any one selected from among Formulae 5-1 to 5-26 and Formulae 6-1 to 6-55, two or more of R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 are optionally bonded to each other to form: a cyclopentane group, a cyclohexane group, a cycloheptane group, a benzene group, a naphthalene group, a fluorene group, or a carbazole group; or a cyclopentane group, a cyclohexane group, a cycloheptane group, a benzene group, a naphthalene group, a fluorene group, or a carbazole group, each substituted with deuterium, F, Cl, Br, I, a cyano group, a phenyl group, a biphenyl group, or any combination thereof, ##STR00203## ##STR00204## ##STR00205## ##STR00206## ##STR00207## ##STR00208## ##STR00209## ##STR00210## and wherein, in Formulae 5-1 to 5-26 and 6-1 to 6-55, Y.sub.31 and Y.sub.32 are each independently O, S, C(Z.sub.33)(Z.sub.34), N(Z.sub.33), or Si(Z.sub.33)(Z.sub.34), Z.sub.31 to Z.sub.34 are each independently selected from hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkenyl group, a C.sub.1-C.sub.20 alkynyl group, a C.sub.1-C.sub.20 alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a phenanthrenyl group, an anthracenyl group, a triphenylenyl group, a pyridinyl group, a pyrimidinyl group, a carbazolyl group, and a triazinyl group, e2 is 1 or 2, e3 is an integer from 1 to 3, e4 is an integer from 1 to 4, e5 is an integer from 1 to 5, e6 is an integer from 1 to 6, e7 is an integer from 1 to 7, e9 is an integer from 1 to 9, and * indicates a binding site to a neighboring atom.

8. The organometallic compound of claim 1, wherein the organometallic compound represented by Formula 1 is represented by Formula 11 or 12: ##STR00211## and wherein, in Formulae 11 and 12, M.sub.1, T.sub.1 to T.sub.4, L.sub.12, Y.sub.22 to Y.sub.26, and R.sub.27 are each the same as described in Formula 1, Y.sub.11 is C(R.sub.11) or N, Y.sub.12 is C(R.sub.12) or N, Y.sub.13 is C(R.sub.13) or N, and Y.sub.14 is C(R.sub.14) or N, Y.sub.31 is C(R.sub.31) or N, Y.sub.32 is C(R.sub.32) or N, and Y.sub.33 is C(R.sub.33) or N, Y.sub.42 is C(R.sub.42) or N, Y.sub.43 is C(R.sub.43) or N, Y.sub.44 is C(R.sub.44) or N, Y.sub.45 is C(R.sub.45) or N, Y.sub.46 is C(R.sub.46) or N, and Y.sub.47 is C(R.sub.47) or N, R.sub.11 to R.sub.14 are each independently the same as described with respect to Rio in Formula 1, R.sub.33 to R.sub.35 are each independently the same as described with respect to R.sub.30 in Formula 1, and R.sub.41 to R.sub.47 are each independently the same as described with respect to R.sub.40 in Formula 1.

9. The organometallic compound of claim 1, wherein the organometallic compound is electrically neutral.

10. The organometallic compound of claim 1, wherein the organometallic compound represented by Formula 1 is selected from Compounds BD1 to BD100: ##STR00212## ##STR00213## ##STR00214## ##STR00215## ##STR00216## ##STR00217## ##STR00218## ##STR00219## ##STR00220## ##STR00221## ##STR00222## ##STR00223## ##STR00224## ##STR00225## ##STR00226## ##STR00227## ##STR00228## ##STR00229## ##STR00230## ##STR00231## ##STR00232## ##STR00233## ##STR00234## ##STR00235## ##STR00236## ##STR00237## ##STR00238## ##STR00239## ##STR00240## ##STR00241## ##STR00242##

11. An organic light-emitting device comprising: a first electrode; a second electrode facing the first electrode; an interlayer between the first electrode and the second electrode and comprising an emission layer; and the organometallic compound of claim 1.

12. The organic light-emitting device of claim 11, wherein the first electrode is an anode, the second electrode is a cathode, the interlayer further comprises a hole transport region between the first electrode and the emission layer and an electron transport region between the emission layer and the second electrode, the hole transport region comprises at least one selected from a hole injection layer, a hole transport layer, a buffer layer, an emission auxiliary layer, and an electron blocking layer, and the electron transport region comprises at least one selected from a hole blocking layer, an electron transport layer, and an electron injection layer.

13. The organic light-emitting device of claim 11, wherein the emission layer comprises the organometallic compound.

14. The organic light-emitting device of claim 13, wherein the emission layer comprises a host and a dopant, and the dopant comprises the organometallic compound.

15. The organic light-emitting device of claim 13, wherein the emission layer is to emit blue light having a maximum emission wavelength of about 410 nm to about 490 nm.

16. The organic light-emitting device of claim 14, wherein the host comprises a first host compound and a second host compound, the first host compound is a hole-transporting host, and the second host compound is an electron-transporting host.

17. An electronic apparatus comprising the organic light-emitting device of claim 11.

18. The electronic apparatus of claim 17, further comprising a thin-film transistor, wherein the thin-film transistor comprises a source electrode and a drain electrode, and the first electrode of the organic light-emitting device is electrically connected to the source electrode or the drain electrode of the thin-film transistor.

19. A consumer product comprising the organic light-emitting device of claim 11.

20. The consumer product of claim 19, wherein the consumer product is at least one selected from a flat panel display, a curved display, a computer monitor, a medical monitor, a television, a billboard, an indoor or outdoor light and/or light for signal, a head-up display, a fully or partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a telephone, a portable phone, a tablet personal computer, a phablet, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a micro display, a three-dimensional (3D) display, a virtual reality or augmented reality display, a vehicle, a video wall with multiple displays tiled together, a theater or stadium screen, a phototherapy device, and a signboard.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain principles of the present disclosure. The above and other aspects, features, and advantages of certain embodiments of the disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0028] FIG. 1 is a schematic view of an organic light-emitting device according to one or more embodiments of the present disclosure;

[0029] FIG. 2 is a schematic view of an electronic apparatus according to one or more embodiments of the present disclosure;

[0030] FIG. 3 is a schematic view of an electronic apparatus according to one or more embodiments of the present disclosure;

[0031] FIG. 4 is a schematic perspective view of electronic equipment including an organic light-emitting device according to one or more embodiments of the present disclosure;

[0032] FIG. 5 is a diagram illustrating an exterior of a vehicle as electronic equipment including an organic light-emitting device according to one or more embodiments of the present disclosure; and

[0033] FIGS. 6A-6C are each a diagram schematically illustrating an interior of a vehicle according to one or more embodiments of the present disclosure.

DETAILED DESCRIPTION

[0034] Reference will now be made in more detail to embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout the present disclosure, and duplicative descriptions thereof may not be provided for conciseness. In this regard, the embodiments of the present disclosure may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the embodiments of the present disclosure are merely described, by referring to the drawings, to explain aspects of the present disclosure. As utilized herein, the term and/or or or may include any and all combinations of one or more of the associated listed items. Throughout the disclosure, the expressions such as at least one of, one of, and selected from, when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list. For example, at least one of a, b or c, at least one selected from a, b, and c, at least one selected from among a to c, etc., may indicate only a, only b, only c, both (e.g., simultaneously) a and b, both (e.g., simultaneously) a and c, both (e.g., simultaneously) b and c, all of a, b, and c, or variations thereof. The / utilized herein may be interpreted as and or as or depending on the situation.

[0035] One or more aspects of embodiments of the present disclosure are directed toward an organometallic compound represented by Formula 1:

##STR00003## [0036] wherein, in Formula 1, M.sub.1 may be platinum (Pt), palladium (Pd), copper (Cu), silver (Ag), gold (Au), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), or thulium (Tm).

[0037] In one or more embodiments, M.sub.1 may be Pt, Pd, Cu, Ag, or Au.

[0038] In one or more embodiments, M.sub.1 may be Pt or Pd.

[0039] In Formula 1, A.sub.10, A.sub.30, and A.sub.40 may each independently be a C.sub.5-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group.

[0040] In one or more embodiments, A.sub.10, A.sub.30, and A.sub.40 may each independently be a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a chrysene group, a cyclopentadiene group, a 1,2,3,4-tetrahydronaphthalene group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzosilole group, a dibenzosilole group, an indenopyridine group, an indolopyridine group, a benzofuropyridine group, a benzothienopyridine group, a benzosilolopyridine group, an indenopyrimidine group, an indolopyrimidine group, a benzofuropyrimidine group, a benzothienopyrimidine group, a benzosilolopyrimidine group, a dihydropyridine group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a 2,3-dihydroimidazole group, a triazole group, a 2,3-dihydrotriazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, a 2,3-dihydrobenzimidazole group, an imidazopyridine group, a 2,3-dihydroimidazopyridine group, an imidazopyrimidine group, a 2,3-dihydroimidazopyrimidine group, an imidazopyrazine group, a 2,3-dihydroimidazopyrazine group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, a benzothiadiazole group, a 5,6,7,8-tetrahydroisoquinoline group, or a 5,6,7,8-tetrahydroquinoline group.

[0041] In one or more embodiments, A.sub.10, A.sub.30, and A.sub.40 may each independently be a group represented by one selected from Formulae 2-1 to 2-43:

##STR00004## ##STR00005## ##STR00006## ##STR00007## ##STR00008## [0042] wherein, in Formulae 2-1 to 2-43, [0043] X.sub.21 to X.sub.23 may each independently be C(Z.sub.24) or C*, wherein at least two selected from among X.sub.21 to X.sub.23 may be C*, [0044] X.sub.24 may be N*, and X.sub.25 and X.sub.26 may each independently be C(Z.sub.24) or C*, wherein at least one selected from among X.sub.25 and X.sub.26 may be C*, [0045] X.sub.27 and X.sub.28 may each independently be N, N(Z.sub.25), or N*, X.sub.29 may be C(Z.sub.24) or C*, wherein i) at least one selected from among X.sub.27 and X.sub.28 may be N*, and X.sub.29 may be C*, or ii) X.sub.27 and X.sub.28 may be N*, and X.sub.29 may be C(Z.sub.24), [0046] Z.sub.21 to Z.sub.25 may each independently be deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkenyl group, a C.sub.1-C.sub.20 alkynyl group, a C.sub.1-C.sub.20 alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a phenanthrenyl group, an anthracenyl group, a triphenylenyl group, a pyridinyl group, a pyrimidinyl group, a carbazolyl group, or a triazinyl group, [0047] c21 may be 1, 2, or 3, [0048] c22 may be 1, 2, 3, 4, or 5, [0049] c23 may be 1,2,3, or 4, [0050] c24 may be 1 or 2, and [0051] * indicates a binding site to a neighboring atom.

[0052] In one or more embodiments, A.sub.40 may be an imidazole group, a benzimidazole group, a 4,5,6,7-tetrahydrobenzimidazole group, a 2,3-dihydrobenzimidazole group, an imidazopyridine group, a 2,3-dihydroimidazopyridine group, an imidazopyrimidine group, a 2,3-dihydroimidazopyrimidine group, an imidazopyrazine group, or a 2,3-dihydroimidazopyrazine group.

[0053] In Formula 1, Y.sub.10, Y.sub.20, Y.sub.30, and Y.sub.40 may each be C or N.

[0054] In Formula 1, Y.sub.21 may be C(R.sub.21), N, or C, Y.sub.22 may be C(R.sub.22) or N, Y.sub.23 may be C(R.sub.23) or N, Y.sub.24 may be C(R.sub.24) or N, Y.sub.25 may be C(R.sub.25) or N, and Y.sub.26 may be C(R.sub.26) or N.

[0055] In Formula 1, T.sub.1 to T.sub.4 may each independently represent a chemical bond.

[0056] In one or more embodiments, T.sub.1 to T.sub.4 may each independently be a coordinate bond or a covalent bond.

[0057] In one or more embodiments, T.sub.1 to T.sub.4 may each independently be a single bond or a double bond.

[0058] In one or more embodiments, two selected from T.sub.1 to T.sub.4 may each be a coordinate bond, and the other two may each be a covalent bond. Accordingly, the organometallic compound may be electrically neutral without having a salt form consisting of a cation and an anion.

[0059] In one or more embodiments, T.sub.1 and T.sub.4 may each be a coordinate bond, and T.sub.2 and T.sub.3 may each be a covalent bond.

[0060] In Formula 1, 11 to L.sub.14 may each independently be a single bond, *O*, *S*, *C(R.sub.1)(R.sub.2)*, *C(R.sub.1)?*, *?C(R.sub.1)*, *C(R.sub.1)?C(R.sub.2)*, *C(?O)*, *C(?S)*, *C?C*, *B(R.sub.1)*, *N(R.sub.1)*, *P(R.sub.1)*, *Si(R.sub.1)(R.sub.2)*, *P(R.sub.1)(R.sub.2)*, or *Ge(R.sub.1)(R.sub.2)*.

[0061] In one or more embodiments, L.sub.11 to L.sub.14 may each independently be selected from a single bond, *O*, *S*, *N(R.sub.1)*, *C(R.sub.1)(R.sub.2)*, *Si(R.sub.1)(R.sub.2)*, and *B(R.sub.1)*.

[0062] In one or more embodiments, L.sub.12 to L.sub.14 may each be a single bond.

[0063] In one or more embodiments, L.sub.13 may be *O*, *S*, *N(R.sub.1)*, or *C(R.sub.1)(R.sub.2)*.

[0064] In Formula 1, a11 to a14 may each independently be 0, 1, 2, 3, 4, or 5.

[0065] In one or more embodiments, a11 may be 0 or 1.

[0066] In one or more embodiments, a11 may be 0, when a11 is 0, ring A10 and ring A40 may not be linked.

[0067] In one or more embodiments, a12 to a14 may each be 1.

[0068] In Formula 1, R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 may each independently be hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylthio group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylthio group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a, Si(Q.sub.1)(Q.sub.2)(Q.sub.3), B(Q.sub.1)(Q.sub.2), N(Q.sub.1)(Q.sub.2), P(Q.sub.1)(Q.sub.2), C(?O)(Q.sub.1), S(?O)(Q.sub.1), S(?O).sub.2(Q.sub.1), P(?O)(Q.sub.1)(Q.sub.2), or P(?S)(Q.sub.1)(Q.sub.2).

[0069] In Formula 1, b10, b30, and b40 may each independently be 1, 2, 3, 4, 5, 6, 7, or 8.

[0070] In Formula 1, two or more of R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 may optionally be bonded to each other to form a C.sub.5-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a. [0071] R.sub.10a may be: [0072] deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, or a nitro group; [0073] a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, or a C.sub.1-C.sub.60 alkoxy group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, Si(Q.sub.11)(Q.sub.12)(Q.sub.13), N(Q.sub.11)(Q.sub.12), B(Q.sub.11)(Q.sub.12), C(?O)(Q.sub.11), S(?O).sub.2(Q.sub.11), P(?O)(Q.sub.11)(Q.sub.12), or any combination thereof; [0074] a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, or a C.sub.6-C.sub.60 arylthio group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, a C.sub.1-C.sub.60 alkoxy group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, Si(Q.sub.21)(Q.sub.22)(Q.sub.23), N(Q.sub.21)(Q.sub.22), B(Q.sub.21)(Q.sub.22), C(?O)(Q.sub.21), S(?O).sub.2(Q.sub.21), P(?O)(Q.sub.21)(Q.sub.22), or any combination thereof; or [0075] Si(Q.sub.31)(Q.sub.32)(Q.sub.33), N(Q.sub.31)(Q.sub.32), B(Q.sub.31)(Q.sub.32), C(?O)(Q.sub.31), S(?O).sub.2(Q.sub.31), or P(?O)(Q.sub.31)(Q.sub.32), and [0076] Q.sub.1 to Q.sub.3, Q.sub.11 to Q.sub.13, Q.sub.21 to Q.sub.23, and Q.sub.31 to Q.sub.33 may each independently be: hydrogen; deuterium; F; Cl; Br; I; a hydroxyl group; a cyano group; a nitro group; a C.sub.1-C.sub.60 alkyl group; a C.sub.2-C.sub.60 alkenyl group; a C.sub.2-C.sub.60 alkynyl group; a C.sub.1-C.sub.60 alkoxy group; or a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, each unsubstituted or substituted with deuterium, F, a cyano group, a C.sub.1-C.sub.60 alkyl group, a C.sub.1-C.sub.60 alkoxy group, a phenyl group, a biphenyl group, or any combination thereof.

[0077] In one or more embodiments, R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 may each independently be: hydrogen, deuterium, F, Cl, Br, I, cyano group, a C.sub.1-C.sub.20 alkyl group, or a C.sub.1-C.sub.20 alkoxy group; [0078] a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkoxy group, or a C.sub.3-C.sub.10 cycloalkyl group, each substituted with deuterium, F, Cl, Br, I, CDH.sub.2, CD.sub.2H, CD.sub.3, a cyano group, a phenyl group, a biphenyl group, or any combination thereof; [0079] a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a perylenyl group, a pentacenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, a silolyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a benzoisoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzothiophenyl group, a naphthobenzosilolyl group, a dibenzocarbazolyl group, a dinaphthofuranyl group, a dinaphthothiophenyl group, a dinaphthosilolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an oxazolopyridinyl group, a thiazolopyridinyl group, a benzonaphthyridinyl group, an azafluorenyl group, an azaspiro-bifluorenyl group, an azacarbazolyl group, an azadibenzofuranyl group, an azadibenzothiophenyl group, an azadibenzosilolyl group, an indenopyrrolyl group, an indolopyrrolyl group, an indenocarbazolyl group, or an indolocarbazolyl group; [0080] a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a perylenyl group, a pentacenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, a silolyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a benzoisoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzothiophenyl group, a naphthobenzosilolyl group, a dibenzocarbazolyl group, a dinaphthofuranyl group, a dinaphthothiophenyl group, a dinaphthosilolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an oxazolopyridinyl group, a thiazolopyridinyl group, a benzonaphthyridinyl group, an azafluorenyl group, an azaspiro-bifluorenyl group, an azacarbazolyl group, an azadibenzofuranyl group, an azadibenzothiophenyl group, an azadibenzosilolyl group, an indenopyrrolyl group, an indolopyrrolyl group, an indenocarbazolyl group, or an indolocarbazolyl group, each substituted with deuterium, F, Cl, Br, I, CDH.sub.2, CD.sub.2H, CD.sub.3, a cyano group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkoxy group, a C.sub.3-C.sub.10 cycloalkyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a perylenyl group, a pentacenyl group, a pyrrolyl group, a thiophenyl group, a furanyl group, a silolyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an indolyl group, an isoindolyl group, an indazolyl group, a purinyl group, a quinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, a benzoisoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanthridinyl group, an acridinyl group, a phenanthrolinyl group, a phenazinyl group, a benzimidazolyl group, a benzofuranyl group, a benzothiophenyl group, a benzosilolyl group, a benzothiazolyl group, a benzoisothiazolyl group, a benzoxazolyl group, a benzoisoxazolyl group, a triazolyl group, a tetrazolyl group, a thiadiazolyl group, an oxadiazolyl group, a triazinyl group, a carbazolyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a dibenzosilolyl group, a benzocarbazolyl group, a naphthobenzofuranyl group, a naphthobenzothiophenyl group, a naphthobenzosilolyl group, a dibenzocarbazolyl group, a dinaphthofuranyl group, a dinaphthothiophenyl group, a dinaphthosilolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an oxazolopyridinyl group, a thiazolopyridinyl group, a benzonaphthyridinyl group, an azafluorenyl group, an azaspiro-bifluorenyl group, an azacarbazolyl group, an azadibenzofuranyl group, an azadibenzothiophenyl group, an azadibenzosilolyl group, an indenopyrrolyl group, an indolopyrrolyl group, an indenocarbazolyl group, an indolocarbazolyl group, Si(Q.sub.31)(Q.sub.32)(Q.sub.33), N(Q.sub.31)(Q.sub.32), B(Q.sub.31)(Q.sub.32), C(?O)(Q.sub.31), S(?O)(Q.sub.31), S(?O).sub.2(Q.sub.31), P(?O)(Q.sub.31)(Q.sub.32), P(?S)(Q.sub.31)(Q.sub.32), or any combination thereof; or [0081] Si(Q.sub.1)(Q.sub.2)(Q.sub.3), B(Q.sub.1)(Q.sub.2), N(Q.sub.1)(Q.sub.2), P(Q.sub.1)(Q.sub.2), C(?O)(Q.sub.1), S(?O)(Q.sub.1), S(?O).sub.2(Q.sub.1), P(?O)(Q.sub.1)(Q.sub.2), or P(?S)(Q.sub.1)(Q.sub.2).

[0082] In one or more embodiments, R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 may each independently be selected from: hydrogen, deuterium, F, Cl, Br, I, cyano group, a C.sub.1-C.sub.20 alkyl group, and a C.sub.1-C.sub.20 alkoxy group; [0083] a C.sub.1-C.sub.20 alkyl group and a C.sub.1-C.sub.20 alkoxy group, each substituted with deuterium, F, Cl, Br, I, a cyano group, a phenyl group, a biphenyl group, or any combination thereof; and [0084] a group represented by one selected from Formulae 5-1 to 5-26 and Formulae 6-1 to 6-55:

##STR00009## ##STR00010## ##STR00011## ##STR00012## ##STR00013## ##STR00014## ##STR00015## ##STR00016## ##STR00017##

[0085] In Formulae 5-1 to 5-26 and 6-1 to 6-55, [0086] Y.sub.31 and Y.sub.32 may each independently be O, S, C(Z.sub.33)(Z.sub.34), N(Z.sub.33), or Si(Z.sub.33)(Z.sub.34),

[0087] Z.sub.31 to Z.sub.34 may each independently be selected from hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkenyl group, a C.sub.1-C.sub.20 alkynyl group, a C.sub.1-C.sub.20 alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a phenanthrenyl group, an anthracenyl group, a triphenylenyl group, a pyridinyl group, a pyrimidinyl group, a carbazolyl group, and a triazinyl group, [0088] e2 may be 1 or 2, [0089] e3 may be an integer from 1 to 3, [0090] e4 may be an integer from 1 to 4, [0091] e5 may be an integer from 1 to 5, [0092] e6 may be an integer from 1 to 6, [0093] e7 may be an integer from 1 to 7, [0094] e9 may be an integer from 1 to 9, and [0095] * indicates a binding site to a neighboring atom.

[0096] In one or more embodiments, R.sub.27 may not be hydrogen.

[0097] In one or more embodiments, R.sub.27 may be deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylthio group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylthio group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, or a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a.

[0098] In one or more embodiments, R.sub.27 may be a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a.

[0099] In one or more embodiments, R.sub.27 may be a C.sub.1-C.sub.20 alkyl group or a C.sub.1-C.sub.20 alkyl group substituted with deuterium.

[0100] In one or more embodiments, R.sub.27 may be: a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, an isobutyl group, a tert-butyl group, an n-pentyl group, a tert-pentyl group, a neopentyl group, an isopentyl group, a sec-pentyl group, a 3-pentyl group, a sec-isopentyl group, an n-hexyl group, an isohexyl group, a sec-hexyl group, a tert-hexyl group, an n-heptyl group, an isoheptyl group, a sec-heptyl group, a tert-heptyl group, an n-octyl group, an isooctyl group, a sec-octyl group, a tert-octyl group, an n-nonyl group, an isononyl group, a sec-nonyl group, a tert-nonyl group, an n-decyl group, an isodecyl group, a sec-decyl group, or a tert-decyl group; or [0101] a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, an isobutyl group, a tert-butyl group, an n-pentyl group, a tert-pentyl group, a neopentyl group, an isopentyl group, a sec-pentyl group, a 3-pentyl group, a sec-isopentyl group, an n-hexyl group, an isohexyl group, a sec-hexyl group, a tert-hexyl group, an n-heptyl group, an isoheptyl group, a sec-heptyl group, a tert-heptyl group, an n-octyl group, an isooctyl group, a sec-octyl group, a tert-octyl group, an n-nonyl group, an isononyl group, a sec-nonyl group, a tert-nonyl group, an n-decyl group, an isodecyl group, a sec-decyl group, or a tert-decyl group, each substituted with deuterium.

[0102] In one or more embodiments, R.sub.41 may not be hydrogen.

[0103] In one or more embodiments, R.sub.41 may be deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylthio group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylthio group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, or a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a.

[0104] In one or more embodiments, R.sub.41 may be a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, or a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a.

[0105] In one or more embodiments, R.sub.41 may be a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkyl group substituted with deuterium, a C.sub.6-C.sub.60 aryl group, or a C.sub.6-C.sub.60 aryl group substituted with deuterium or substituted with a C.sub.6-C.sub.60 aryl group substituted with deuterium.

[0106] In one or more embodiments, two or more of R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 may optionally be bonded to each other to form:

[0107] a cyclopentane group, a cyclohexane group, a cycloheptane group, a benzene group, a naphthalene group, a fluorene group, or a carbazole group, each unsubstituted or substituted with at least one R.sub.10a.

[0108] In one or more embodiments, R.sub.1, R.sub.2, R.sub.10, R.sub.21 to R.sub.27, R.sub.30, and R.sub.40 may each independently be: hydrogen, deuterium, F, Cl, Br, I, cyano group, a C.sub.1-C.sub.20 alkyl group, or a C.sub.1-C.sub.20 alkoxy group, [0109] a C.sub.1-C.sub.20 alkyl group or a C.sub.1-C.sub.20 alkoxy group, each substituted with deuterium, F, Cl, Br, I, a cyano group, a phenyl group, a biphenyl group, or any combination thereof; [0110] a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a carbazolyl group, an acridinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, or a dibenzocarbazolyl group; or [0111] a phenyl group, a biphenyl group, a terphenyl group, a pentalenyl group, an indenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a carbazolyl group, an acridinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolyl group, or a dibenzocarbazolyl group, each substituted with deuterium, F, Cl, Br, I, a cyano group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkoxy group, a phenyl group, a biphenyl group, a C.sub.1-C.sub.20 alkyl group substituted with deuterium, a phenyl group substituted with deuterium, or any combination thereof.

[0112] In Formula 1, b10, b30, and b40 may each independently be 1, 2, 3, 4, 5, 6, 7, or 8.

[0113] In one or more embodiments, the organometallic compound represented by Formula 1 may be a compound represented by Formula 11 or 12:

##STR00018##

[0114] In Formulae 11 and 12, [0115] M.sub.1, T.sub.1 to T.sub.4, L.sub.12, Y.sub.22 to Y.sub.26, and R.sub.27 are each the same as described herein, [0116] Y.sub.11 may be C(R.sub.11) or N, Y.sub.12 may be C(R.sub.12) or N, Y.sub.13 may be C(R.sub.13) or N, and Y.sub.14 may be C(R.sub.14) or N, [0117] Y.sub.31 may be C(R.sub.31) or N, Y.sub.32 may be C(R.sub.32) or N, and Y.sub.33 may be C(R.sub.33) or N, [0118] Y.sub.42 may be C(R.sub.42) or N, Y.sub.43 may be C(R.sub.43) or N, Y.sub.44 may be C(R.sub.44) or N, Y.sub.45 may be C(R.sub.45) or N, Y.sub.46 may be C(R.sub.46) or N, and Y.sub.47 may be C(R.sub.47) or N, [0119] R.sub.11 to R.sub.14 may each independently be the same as described with respect to R.sub.10, [0120] R.sub.31 to R.sub.33 may each independently be the same as described with respect to R.sub.30, and [0121] R.sub.41 to R.sub.47 may each independently be the same as described with respect to R.sub.40.

[0122] In one or more embodiments, R.sub.41 may not be hydrogen.

[0123] In one or more embodiments, R.sub.41 may be deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylthio group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylthio group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, or a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a.

[0124] In one or more embodiments, R.sub.41 may be a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, or a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a.

[0125] In one or more embodiments, R.sub.41 may be a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkyl group substituted with deuterium, a C.sub.6-C.sub.60 aryl group, or a C.sub.6-C.sub.60 aryl group substituted with deuterium or substituted with a C.sub.6-C.sub.60 aryl group substituted with deuterium.

[0126] In one or more embodiments, the organometallic compound may be electrically neutral.

[0127] In one or more embodiments, the organometallic compound represented by Formula 1 may be one selected from Compounds BD1 to BD100, but embodiments of the present disclosure are not limited thereto:

##STR00019## ##STR00020## ##STR00021## ##STR00022## ##STR00023## ##STR00024## ##STR00025## ##STR00026## ##STR00027## ##STR00028## ##STR00029## ##STR00030## ##STR00031## ##STR00032## ##STR00033## ##STR00034## ##STR00035## ##STR00036## ##STR00037## ##STR00038## ##STR00039## ##STR00040## ##STR00041## ##STR00042## ##STR00043## ##STR00044## ##STR00045## ##STR00046## ##STR00047## ##STR00048##

[0128] In the organometallic compound represented by Formula 1, a heterocyclic structure including boron atoms satisfies a structure of a tetradentate organometallic compound located in (e.g., being) a highest occupied molecular orbital (HOMO) skeletal structure in a ligand, and due to such structure, the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) in the organometallic 1 compound structure are separated, which leads to a narrow full width of half maximum (FWHM), high color purity, and high luminescence efficiency.

[0129] In some embodiments, R.sub.27 in Formula 1 bonded to boron atoms may suppress or reduce formation of an excimer of the organometallic compound having a tetradentate planar structure to improve structural stability. Thus, when the organometallic compound is utilized in an emission layer of an organic light-emitting device, the organic light-emitting device may have long lifespan, and formation of exciplex with a host in the emission layer may be suppressed or reduced, which leads to high efficiency characteristics.

[0130] Accordingly, when the organometallic compound represented by Formula 1 is applied to an organic light-emitting device, the color purity, luminescence efficiency, and lifespan characteristics may be improved. For example, when an emission layer of an organic light-emitting device includes the organometallic compound represented by Formula 1, the organic light-emitting device to emit deep blue with excellent or suitable color purity, luminescence efficiency, and lifespan characteristics may be implemented.

[0131] The organometallic compound represented by Formula 1 may be to emit blue light. For example, the organometallic compound may be to emit blue light having a maximum emission wavelength of greater than or equal to 400 nm and less than 500 nm, for example, greater than or equal to 410 nm and less than 490 nm (e.g., bottom emission CIE.sub.x,y color coordinates of 0.15, 0.05 to 0.15 from a bottom-emitting device), but embodiments of the present disclosure are not limited thereto. Thus, the organometallic compound represented by Formula 1 may be usefully utilized in manufacturing an organic light-emitting device to emit blue light.

[0132] In one or more embodiments, the organometallic compound may be to emit blue light having a maximum emission wavelength of greater than or equal to 410 nm and less than or equal to 465 nm.

[0133] Synthesis methods of the organometallic compound represented by Formula 1 may be recognizable by one of ordinary skill in the art by referring to Examples provided in the present disclosure.

[0134] According to one or more embodiments of the present disclosure, an organic light-emitting device may include a first electrode, a second electrode, an interlayer between the first electrode and the second electrode and including an emission layer, and the organometallic compound represented by Formula 1.

[0135] In one or more embodiments, the first electrode of the organic light-emitting device may be an anode, [0136] the second electrode of the organic light-emitting device may be a cathode, and [0137] the interlayer may further include a hole transport region between the first electrode and the emission layer and an electron transport region between the emission layer and the second electrode, [0138] the hole transport region may include a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer, or any combination thereof, and [0139] the electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0140] In one or more embodiments, the electron transport region may include a hole blocking layer.

[0141] In one or more embodiments, the hole blocking layer may be in direct contact with the emission layer.

[0142] In one or more embodiments, the hole blocking layer may include a phosphine oxide-containing compound, a silyl-containing compound, or a combination thereof.

[0143] In one or more embodiments, the emission layer may include the organometallic compound represented by Formula 1. For example, the emission layer 1 may be to emit blue light having a maximum emission wavelength in a range of about 400 nm to about 500 nm.

[0144] In one or more embodiments, the emission layer of the organic light-emitting device may include a dopant and a host, and the dopant may include the organometallic compound represented by Formula 1. For example, the organometallic compound may act as a dopant. The emission layer may be to emit, for example, blue light. The blue light may have, for example, a maximum emission wavelength in a range of about 400 nm to about 500 nm.

[0145] In one or more embodiments, the emission layer may be to emit deep blue light having a maximum emission wavelength of greater than or equal to 410 nm and less than or equal to 465 nm.

[0146] In one or more embodiments, the emission layer may include a host and a dopant.

[0147] In one or more embodiments, in the emission layer, an amount of the host may be greater than that of the dopant based on a weight.

[0148] In one or more embodiments, the host may include a silicon-containing compound, a phosphine oxide-containing compound, or any combination thereof.

[0149] In one or more embodiments, the host may be understood by referring to the description of the host provided herein.

[0150] Therefore, a light-emitting device (e.g., an organic light-emitting device) including the organometallic compound represented by Formula 1 may have high color purity, high luminescence efficiency, low driving voltage, and long lifespan characteristics.

[0151] In one or more embodiments, the organometallic compound represented by Formula 1 may be to emit blue light. For example, the organometallic compound represented by Formula 1 may be to emit blue light having a maximum emission wavelength in a range of about 390 nm to about 500 nm, about 410 nm to about 500 nm, about 410 nm to about 490 nm, about 430 nm to about 480 nm, about 440 nm to about 475 nm, or about 455 nm to about 470 nm.

[0152] In one or more embodiments, the organometallic compound represented by Formula 1 may have a color purity in which a bottom emission CIEx coordinate is in a range of about 0.12 to about 0.15 or about 0.13 to about 0.14, and a bottom emission CIEy coordinate is in a range of about 0.06 to about 0.25, about 0.10 to about 0.20, or about 0.13 to about 0.20.

[0153] The term interlayer as utilized herein refers to a single layer and/or all of a plurality of layers between the first electrode and the second electrode of the organic light-emitting device.

[0154] One or more aspects of embodiments of the present disclosure are directed toward an electronic apparatus including the organic light-emitting device. In one or more embodiments, the electronic apparatus may further include a thin-film transistor.

[0155] For example, the electronic apparatus may further include a thin-film transistor including a source electrode and a drain electrode, wherein the first electrode of the organic light-emitting device may be electrically connected to the source electrode or the drain electrode. In one or more embodiments, the electronic apparatus may further include a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof. More details of the electronic apparatus may be referred to the descriptions provided herein.

[0156] One or more aspects of embodiments of the present disclosure are directed toward an electronic apparatus (e.g., a consumer product) including the organic light-emitting device.

[0157] The electronic apparatus (e.g., the consumer product) may be at least one selected from a flat panel display, a curved display, a computer monitor, a medical monitor, a television, an advertisement board, an indoor or outdoor lighting and/or signaling light, a head-up display, a fully or partially transparent display, a flexible display, a rollable display, a foldable display, a stretchable display, a laser printer, a 1 telephone, a mobile phone, a tablet, a phablet, a personal digital assistant (PDA), a wearable device, a laptop computer, a digital camera, a camcorder, a viewfinder, a microdisplay, a 3D display, a virtual or augmented reality display, a vehicle, a video wall including multiple displays tiled together, a theater or stadium screen, a phototherapy device, and a sign.

Description of FIG. 1

[0158] FIG. 1 is a schematic cross-sectional view of an organic light-emitting device 10 according to one or more embodiments of the present disclosure. The organic light-emitting device 10 may include a first electrode 110, an interlayer 130, and a second electrode 150.

[0159] Hereinafter, the structure of the organic light-emitting device 10 according to one or more embodiments and a method of manufacturing the organic light-emitting device 10 will be described with reference to FIG. 1.

First Electrode 110

[0160] In FIG. 1, in some embodiments, a substrate may be additionally arranged under the first electrode 110 and/or on the second electrode 150. In some embodiments, as the substrate, a glass substrate or a plastic substrate may be utilized.

[0161] In one or more embodiments, the substrate may be a flexible substrate, and may include plastics with excellent or suitable heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0162] The first electrode 110 may be formed by, for example, depositing or sputtering a material for forming the first electrode 110 on the substrate. When the first electrode 110 is an anode, a material for forming the first electrode 110 may be a high-work function material that facilitates injection of holes.

[0163] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. In one or more embodiments, when the first electrode 110 is a transmissive electrode, a material for forming the first electrode 110 may include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO.sub.2), zinc oxide (ZnO), or any combination thereof. In one or more embodiments, when the first electrode 110 is a semi-transmissive electrode or a reflective electrode, a material for forming the first electrode 110 may include magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (AlLi), calcium (Ca), magnesium-indium (MgIn), magnesium-silver (MgAg), or any combination thereof.

[0164] The first electrode 110 may have a single-layer structure including (e.g., consisting of) a single layer or a multi-layer structure including multiple layers. For example, in some embodiments, the first electrode 110 may have a three-layer structure of ITO/Ag/ITO.

Interlayer 130

[0165] The interlayer 130 may be on the first electrode 110. The interlayer 130 may include an emission layer.

[0166] In one or more embodiments, the interlayer 130 may further include a hole transport region between the first electrode 110 and the emission layer, and an electron transport region between the emission layer and the second electrode 150.

[0167] In one or more embodiments, the interlayer 130 may further include, in addition to one or more suitable organic materials, a metal-containing compound such as an organometallic compound, an inorganic material such as quantum dots, and/or the like.

[0168] In one or more embodiments, the interlayer 130 may include, i) two or more emitting units sequentially stacked between the first electrode 110 and the second electrode 150, and ii) a charge generation layer between the two or more emitting units. When the interlayer 130 includes the two or more emitting units and the charge generation layer, the organic light-emitting device 10 may be a tandem organic light-emitting device.

Hole Transport Region in Interlayer 130

[0169] The hole transport region may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) multiple materials that are different from each other, or iii) a multi-layer structure including multiple materials including multiple materials that are different from each other.

[0170] The hole transport region may include a hole injection layer, a hole transport layer, an emission auxiliary layer, an electron blocking layer, or any combination thereof.

[0171] For example, in some embodiments, the hole transport region may have a multi-layered structure including a hole injection layer/hole transport layer structure, a hole injection layer/hole transport layer/emission auxiliary layer structure, a hole injection layer/emission auxiliary layer structure, a hole transport layer/emission auxiliary layer structure, or a hole injection layer/hole transport layer/electron blocking layer structure, the constituent layers of each structure being stacked sequentially from the first electrode 110 in each stated order.

[0172] In one or more embodiments, the hole transport region may include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

##STR00049##

[0173] In Formulae 201 and 202, [0174] L.sub.201 to L.sub.204 may each independently be a C3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0175] L.sub.205 may be *O*, *S*, *N(Q.sub.201)-*, a C.sub.1-C.sub.20 alkylene group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.20 alkenylene group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a, or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0176] xa1 to xa4 may each independently be an integer from 0 to 5, [0177] xa5 may be an integer from 1 to 10, [0178] R.sub.201 to R.sub.204 and Q.sub.201 may each independently be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0179] R.sub.201 and R.sub.202 may optionally be bonded to each other via a single bond, a C.sub.1-C.sub.5 alkylene group unsubstituted or substituted with at least one R.sub.10a, or a C.sub.2-C.sub.5 alkenylene group unsubstituted or substituted with at least one R.sub.10a, to form a C.sub.8-C.sub.60 polycyclic group (for example, a carbazole group, etc.) unsubstituted or substituted with at least one R.sub.10a (for example, Compound HT16, etc.), [0180] R.sub.203 and R.sub.204 may optionally be bonded to each other via a single bond, a C.sub.1-C.sub.5 alkylene group unsubstituted or substituted with at least one R.sub.10a, or a C.sub.2-C.sub.5 alkenylene group unsubstituted or substituted with at least one R.sub.10a, to form a C.sub.8-C.sub.60 polycyclic group unsubstituted or substituted with at least one R.sub.10a, and [0181] na1 may be an integer from 1 to 4.

[0182] For example, in some embodiments, each of Formulae 201 and 202 may include at least one selected from groups represented by Formulae CY201 to CY217:

##STR00050## ##STR00051## ##STR00052## ##STR00053## ##STR00054## ##STR00055## ##STR00056## ##STR00057##

[0183] In Formulae CY201 to CY217, R.sub.10b and R.sub.10c may each be the same as described with respect to R.sub.10a, ring CY.sub.201 to ring CY.sub.204 may each independently be a C.sub.3-C.sub.20 carbocyclic group or a C.sub.1-C.sub.20 heterocyclic group, and at least one hydrogen in Formulae CY201 to CY217 may be unsubstituted or substituted with R.sub.10a.

[0184] In one or more embodiments, in Formulae CY201 to CY217, ring CY201 to ring CY204 may each independently be a benzene group, a naphthalene group, a phenanthrene group, or an anthracene group.

[0185] In one or more embodiments, each of Formulae 201 and 202 may include at least one selected from the groups represented by Formulae CY201 to CY203.

[0186] In one or more embodiments, Formula 201 may include at least one selected from the groups represented by Formulae CY201 to CY203 and at least one selected from the groups represented by Formulae CY204 to CY217.

[0187] In one or more embodiments, in Formula 201, xa1 may be 1, R.sub.201 may be one selected from the groups represented by Formulae CY201 to CY203, xa2 may be 0, and R.sub.202 may be one selected from the groups represented by Formulae CY204 to CY207.

[0188] In one or more embodiments, each of Formulae 201 and 202 may not include the (e.g., may exclude any) groups represented by Formulae CY201 to CY203.

[0189] In one or more embodiments, each of Formulae 201 and 202 may not include the (e.g., may exclude any) groups represented by Formulae CY201 to CY203, and may include at least one selected from the groups represented by Formulae CY204 to CY217.

[0190] In one or more embodiments, each of Formulae 201 and 202 may not include the (e.g., may exclude any) groups represented by Formulae CY201 to CY217.

[0191] In one or more embodiments, the hole transport region may include at least one selected from Compounds HT1 to HT46, 4,4,4-[tris(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), 4,4,4-tris(N,N-diphenylamino)triphenylamine (TDATA), 4,4,4-tris[N-(2-naphthyl)-N-phenylamino]-triphenylamine (2-TNATA), N,N-di(naphthalen-1-yl)-N,N-diphenyl-benzidine (NPB(NPD)), p-NPB, N,N-bis(3-methylphenyl)-N,N-diphenyl-[1,1-biphenyl]-4,4-diamine (TPD), Spiro-TPD, Spiro-NPB, methylated NPB, 4,4-cyclohexylidene bis[N,N-bis(4-methylphenyl)benzenamine](TAPC), 4,4-bis[N,N-(3-tolyl)amino]-3,3-dimethylbiphenyl (HMTPD), 4,4,4-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline/dodecylbenzenesulfonic acid (PANI/DBSA), poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS), polyaniline/camphor sulfonic acid (PANI/CSA), polyaniline/poly(4-styrenesulfonate) (PANI/PSS), and/or any combination thereof:

##STR00058## ##STR00059## ##STR00060## ##STR00061## ##STR00062## ##STR00063## ##STR00064## ##STR00065## ##STR00066## ##STR00067##

[0192] A thickness of the hole transport region may be in a range of about 50 ? to about 10,000 ?, for example, about 100 ? to about 4,000 ?. When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, a thickness of the hole injection layer may be in a range of about 100 ? to about 9,000 ?, for example, about 100 ? to about 1,000 ?, and a thickness of the hole transport layer may be in a range of about 50 ? to about 2,000 ?, for example, about 100 ? to about 1,500 ?. When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within these ranges, satisfactory hole transporting characteristics may be obtained without a substantial increase in driving voltage.

[0193] The emission auxiliary layer may increase light-emission efficiency by compensating for an optical resonance distance according to the wavelength of light emitted by the emission layer, and the electron blocking layer may block or reduce the leakage of electrons from the emission layer to the hole transport region. Materials that may be included in the hole transport region may be included in the emission auxiliary layer and the electron blocking layer.

p-dopant

[0194] In one or more embodiments, the hole transport region may further include, in addition to these materials, a charge-generation material for the improvement of conductive properties of the hole transport region. The charge-generation material may be substantially uniformly or non-uniformly dispersed in the hole transport region (for example, in the form of a single layer including (e.g., consisting of) a charge-generation material).

[0195] The charge-generation material may be, for example, a p-dopant.

[0196] For example, in some embodiments, the p-dopant may have a LUMO energy level of less than or equal to about ?3.5 eV.

[0197] In one or more embodiments, the p-dopant may include a quinone derivative, a cyano group-containing compound, a compound including element EL1 and element EL2, or any combination thereof.

[0198] Non-limiting examples of the quinone derivative may be tetracyanoquinodimethane (TCNQ), 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ), and/or the like.

[0199] Non-limiting examples of the cyano group-containing compound may be dipyrazino[2,3-f:2,3-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile (HAT-CN), and/or a compound represented by Formula 221:

##STR00068##

[0200] In Formula 221, [0201] R.sub.221 to R.sub.223 may each independently be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, and [0202] at least one selected from among R.sub.221 to R.sub.223 may each independently be a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, each substituted with: a cyano group; F; Cl; Br; I; a C.sub.1-C.sub.20 alkyl group substituted with a cyano group, F, Cl, Br, I, or any combination thereof; or any combination thereof.

[0203] In the compound including element EL1 and element EL2, element EL1 may be metal, metalloid, or any combination thereof, and element EL2 may be non-metal, metalloid, or any combination thereof.

[0204] Non-limiting examples of the metal may be an alkali metal (for example, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); an alkaline earth metal (for example, beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); a transition metal (for example, titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt (Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), etc.); a post-transition metal (for example, zinc (Zn), indium (In), tin (Sn), etc.); a lanthanide metal (for example, lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), etc.); and/or the like.

[0205] Non-limiting examples of the metalloid may be silicon (Si), antimony (Sb), tellurium (Te), and/or the like.

[0206] Non-limiting examples of the non-metal may be oxygen (O), halogen (for example, F, Cl, Br, I, etc.), and/or the like.

[0207] Non-limiting examples of the compound including element EL1 and element EL2 may be metal oxides, metal halides (for example, metal fluoride, metal chloride, metal bromide, metal iodide, etc.), metalloid halides (for example, metalloid fluorides, metalloid chlorides, metalloid bromides, metalloid iodides, etc.), metal tellurides, or any combination thereof.

[0208] Non-limiting examples of the metal oxide may be tungsten oxides (for example, WO, W.sub.2O.sub.3, WO.sub.2, WO.sub.3, W.sub.2O.sub.5, etc.), vanadium oxides (for example, VO, V.sub.2O.sub.3, VO.sub.2, V.sub.2O.sub.5, etc.), molybdenum oxides (MoO, Mo.sub.2O.sub.3, MoO.sub.2, MoO.sub.3, Mo.sub.2O.sub.5, etc.), rhenium oxides (for example, ReO.sub.3, etc.), and/or the like.

[0209] Non-limiting examples of the metal halide may be alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, lanthanide metal halides, and/or the like.

[0210] Non-limiting examples of the alkali metal halide may be LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, CsI, and/or the like.

[0211] Non-limiting examples of the alkaline earth metal halide may be BeF.sub.2, MgF.sub.2, CaF.sub.2, SrF.sub.2, BaF.sub.2, BeCl.sub.2, MgCl.sub.2, CaCl.sub.2), SrCl.sub.2, BaCl.sub.2, BeBr.sub.2, MgBr.sub.2, CaBr.sub.2, SrBr.sub.2, BaBr.sub.2, BeI.sub.2, MgI.sub.2, CaI.sub.2, SrI.sub.2, BaI.sub.2, and/or the like.

[0212] Non-limiting examples of the transition metal halide may be titanium halides (for example, TiF.sub.4, TiCl.sub.4, TiBr.sub.4, TiI.sub.4, etc.), zirconium halides (for example, ZrF.sub.4, ZrCl.sub.4, ZrBr.sub.4, ZrI.sub.4, etc.), hafnium halides (for example, HfF.sub.4, HfCl.sub.4, HfBr.sub.4, HfI.sub.4, etc.), vanadium halides (for example, VF.sub.3, VCl.sub.3, VBr.sub.3, V.sub.13, etc.), niobium halides (for example, NbF.sub.3, NbCl.sub.3, NbBr.sub.3, NbI.sub.3, etc.), tantalum halides (for example, TaF.sub.3, TaCl.sub.3, TaBr.sub.3, TaI.sub.3, etc.), chromium halides (for example, CrF.sub.3, CrCl.sub.3, CrBr.sub.3, CrI.sub.3, etc.), molybdenum halides (for example, MoF.sub.3, MoCl.sub.3, MoBr.sub.3, MoI.sub.3, etc.), tungsten halides (for example, WF.sub.3, WCl.sub.3, WBr.sub.3, WI.sub.3, etc.), manganese halides (for example, MnF.sub.2, MnCl.sub.2, MnBr.sub.2, MnI.sub.2, etc.), technetium halides (for example, TcF.sub.2, TcCl.sub.2, TcBr.sub.2, TcI.sub.2, etc.), rhenium halides (for example, ReF.sub.2, ReCl.sub.2, ReBr.sub.2, ReI.sub.2, etc.), ferrous halides (for example, FeF.sub.2, FeCl.sub.2, FeBr.sub.2, FeI.sub.2, etc.), ruthenium halides (for example, RuF.sub.2, RuCl.sub.2, RuBr.sub.2, RuI.sub.2, etc.), osmium halides (for example, OsF.sub.2, OsCl.sub.2, OsBr.sub.2, OsI.sub.2, etc.), cobalt halides (for example, CoF.sub.2, CoCl.sub.2, CoBr.sub.2, CoI.sub.2, etc.), rhodium halides (for example, RhF.sub.2, RhCl.sub.2, RhBr.sub.2, RhI.sub.2, etc.), iridium halides (for example, IrF.sub.2, IrCl.sub.2, IrBr.sub.2, IrI.sub.2, etc.), nickel halides (for example, NiF.sub.2, NiCl.sub.2, NiBr.sub.2, NiI.sub.2, etc.), palladium halides (for example, PdF.sub.2, PdCl.sub.2, PdBr.sub.2, PdI.sub.2, etc.), platinum halides (for example, PtF.sub.2, PtCl.sub.2, PtBr.sub.2, PtI.sub.2, etc.), cuprous halides (for example, CuF, CuCl, CuBr, CuI, etc.), silver halides (for example, AgF, AgCl, AgBr, AgI, etc.), gold halides (for example, AuF, AuCl, AuBr, AuI, etc.), and/or the like.

[0213] Non-limiting examples of the post-transition metal halide may be zinc halides (for example, ZnF.sub.2, ZnCl.sub.2, ZnBr.sub.2, ZnI.sub.2, etc.), indium halides (for example, InI.sub.3, etc.), tin halides (for example, SnI.sub.2, etc.), and/or the like.

[0214] Non-limiting examples of the lanthanide metal halide may be YbF, YbF.sub.2, YbF.sub.3, SmF.sub.3, YbCl, YbCl.sub.2, YbCl.sub.3, SmCl.sub.3, YbBr, YbBr.sub.2, YbBr.sub.3, SmBr.sub.3, YbI, YbI.sub.2, YbI.sub.3, SmI.sub.3, and/or the like.

[0215] Non-limiting examples of the metalloid halide may be antimony halides (for example, SbCl.sub.5 and/or the like) and/or the like.

[0216] Non-limiting examples of the metal telluride may be alkali metal tellurides (for example, Li.sub.2Te, Na.sub.2Te, K.sub.2Te, Rb.sub.2Te, Cs.sub.2Te, etc.), alkaline earth metal tellurides (for example, BeTe, MgTe, CaTe, SrTe, BaTe, etc.), transition metal tellurides (for example, TiTe.sub.2, ZrTe.sub.2, HfTe.sub.2, V.sub.2Te.sub.3, Nb.sub.2Te.sub.3, Ta.sub.2Te.sub.3, Cr.sub.2Te.sub.3, Mo.sub.2Te.sub.3, W.sub.2Te.sub.3, MnTe, TcTe, ReTe, FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu.sub.2Te, CuTe, Ag.sub.2Te, AgTe, Au.sub.2Te, etc.), post-transition metal tellurides (for example, ZnTe, etc.), lanthanide metal tellurides (for example, LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, etc.), and/or the like.

Emission Layer in Interlayer 130

[0217] When the organic light-emitting device 10 is a full-color organic light-emitting device, the emission layer may be patterned into a red emission layer, a green emission layer, and/or a blue emission layer, according to a sub-pixel. In one or more embodiments, the emission layer may have a stacked structure of two or more layers selected from a red emission layer, a green emission layer, and a blue emission layer, in which the two or more layers contact each other or are separated from each other, to emit white light (e.g., combined white light). In one or more embodiments, the emission layer may include two or more materials selected from a red light-emitting material, a green light-emitting material, and a blue light-emitting material, in which the two or more materials are mixed with each other in a single layer, to emit white light (e.g., combined white light).

[0218] In one or more embodiments, the emission layer may include a host and a dopant. The dopant may include a phosphorescent dopant, a fluorescent dopant, or any combination thereof.

[0219] An amount of the dopant in the emission layer may be from about 0.01 part by weight to about 15 parts by weight based on 100 parts by weight of the host.

[0220] In one or more embodiments, the emission layer may include a quantum dot.

[0221] In one or more embodiments, the emission layer may include a delayed fluorescence material. The delayed fluorescence material may act as a host or a dopant in the emission layer 120.

[0222] A thickness of the emission layer may be in a range of about 100 ? to about 1,000 ?, for example, about 200 ? to about 600 ?. When the thickness of the emission layer is within these ranges, excellent or suitable luminescence characteristics may be obtained without a substantial increase in driving voltage.

Host

[0223] In one or more embodiments, the host may include a compound represented by Formula 301:

##STR00069##

[0224] wherein, in Formula 301, [0225] Ar.sub.301 and L.sub.301 may each independently be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0226] xb11 may be 1, 2, or 3, [0227] xb1 may be an integer from 0 to 5, [0228] R.sub.301 may be hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, Si(Q.sub.301)(Q.sub.302)(Q.sub.303), N(Q.sub.301)(Q.sub.302), B(Q.sub.301)(Q.sub.302), C(?O)(Q.sub.301), S(?O).sub.2(Q.sub.301), or P(?O)(Q.sub.301)(Q.sub.302), [0229] xb21 may be an integer from 1 to 5, and [0230] Q.sub.301 to Q.sub.303 may each be the same as described with respect to Q.sub.1.

[0231] For example, in some embodiments, when xb11 in Formula 301 is 2 or more, two or more of Ar.sub.301(s) may be linked to each other via a single bond.

[0232] In one or more embodiments, the host may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

##STR00070## [0233] wherein, in Formulae 301-1 and 301-2, [0234] ring A301 to ring A304 may each independently be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0235] X.sub.301 may be O, S, N[(L.sub.304).sub.xb4-R.sub.304], C(R.sub.304)(R.sub.305), or Si(R.sub.304)(R.sub.305), [0236] xb22 and xb23 may each independently be 0, 1, or 2, [0237] L.sub.301, xb1, and R.sub.301 may each be the same as described herein, [0238] L.sub.302 to L.sub.304 may each independently be the same as described with respect to L.sub.301, [0239] xb2 to xb4 may each independently be the same as described with respect to xb1, and [0240] R.sub.302 to R.sub.305 and R.sub.311 to R.sub.314 may each be the same as described with respect to R.sub.301.

[0241] In one or more embodiments, the host may include an alkaline earth metal complex, a post-transition metal complex, or any combination thereof. In one or more embodiments, the host may include a Be complex (for example, Compound H55), an Mg complex, a Zn complex, or any combination thereof.

[0242] In one or more embodiments, the host may include: at least one selected from among Compounds H1 to H124; 9,10-di(2-naphthyl)anthracene (ADN); 2-methyl-9,10-bis(naphthalen-2-yl)anthracene (MADN); 9,10-di(2-naphthyl)-2-t-butyl-anthracene (TBADN); 4,4-bis(N-carbazolyl)-1,1-biphenyl (CBP); 1,3-di(carbazol-9-yl)benzene (mCP); 1,3,5-tri(carbazol-9-yl)benzene (TCP); or any combination thereof:

##STR00071## ##STR00072## ##STR00073## ##STR00074## ##STR00075## ##STR00076## ##STR00077## ##STR00078## ##STR00079## ##STR00080## ##STR00081## ##STR00082## ##STR00083## ##STR00084## ##STR00085## ##STR00086## ##STR00087## ##STR00088## ##STR00089## ##STR00090## ##STR00091## ##STR00092## ##STR00093## ##STR00094## ##STR00095## ##STR00096## ##STR00097## ##STR00098##

[0243] In one or more embodiments, the host may include a first host compound and a second host compound.

[0244] In one or more embodiments, the first host compound may be a hole-transporting host.

[0245] In one or more embodiments, the second host compound may be an electron-transporting host.

[0246] In one or more embodiments, the term hole-transporting host as utilized herein refers to a compound including a hole-transporting moiety.

[0247] In one or more embodiments, the term electron-transporting host as utilized herein refers to not only a compound including an electron-transporting moiety, but also a compound having bipolar properties.

[0248] The terms hole-transporting host and electron-transporting host may be understood according to the relative difference in hole mobility and electron mobility between the hole-transporting host and the electron-transport host. For example, even when the electron-transporting host does not include an electron-transporting moiety, a bipolar compound exhibiting relatively higher electron mobility than the hole-transporting host may be also understood as the electron-transporting host.

[0249] In one or more embodiments, the hole-transporting host may be represented by one selected from Formulae 311-1 to 311-6, and the electron-transporting host may be represented by one selected from Formulae 312-1 to 312-4 and 313:

##STR00099## ##STR00100## [0250] wherein, in Formulae 311-1 to 311-6, 312-1 to 312-4, 313, and 313 ?, [0251] Ar.sub.301 may be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0252] A.sub.301 to A.sub.304 may each independently be a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, [0253] X.sub.301 may be O, S, N[(L.sub.304).sub.xb4-R.sub.304], C[(L.sub.304).sub.xb4-R.sub.304][(L.sub.305).sub.xb5-R.sub.305], or Si[(L.sub.304).sub.xb4-R.sub.304][(L.sub.305).sub.xb5-R.sub.305], [0254] X.sub.302, Y.sub.301, and Y.sub.302 may each independently be a single bond, *O*, *S*, *N[(L.sub.305).sub.xb5-R.sub.305], *C[(L.sub.304).sub.xb4-R.sub.304][(L.sub.305).sub.xb5-R.sub.305]*, *Si[(L.sub.304).sub.xb4-R.sub.304][(L.sub.305).sub.xb5-R.sub.305]*, or *S(?O).sub.2*, [0255] xb1 to xb5 may each be 0, 1, 2, 3, 4, or 5, [0256] xb6 may be 1, 2, 3, 4, or 5, [0257] X.sub.321 to X.sub.328 may each independently be N or C[(L.sub.324).sub.xb24-R.sub.324], [0258] Y.sub.321 may be *O*, *S*, *N[(L.sub.325).sub.xb25-R.sub.325]*, *C[(L.sub.325).sub.xb25-R.sub.325][(L.sub.326).sub.xb26-R.sub.326]*, *C[(L.sub.325).sub.xb25-R.sub.325]?C[(L.sub.326).sub.xb26-R.sub.326]*, *C[(L.sub.325).sub.xb25-R.sub.325]?N*, or *N?C[(L.sub.326).sub.xb26-R.sub.326]*, [0259] k21 may be 0, 1, or 2, wherein Y.sub.321 does not exist when k21 is 0, [0260] xb21 to xb26 may each independently be 0, 1, 2, 3, 4, or 5, [0261] A.sub.31, A.sub.32, and A.sub.34 may each independently be a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group, [0262] A.sub.33 may be a group represented by Formula 313 ?, [0263] X.sub.31 may be *N[(L.sub.335).sub.xb35-(R.sub.335)]*, *O*, *S*, *Se*, *C[(L.sub.335).sub.xb35-(R.sub.335)][(L.sub.336).sub.xb36-(R.sub.336)]*, or *Si[(L.sub.335).sub.xb35-(R.sub.335)][(L.sub.336).sub.xb36-(R.sub.336)]*, [0264] xb31 to xb36 may each independently be 0, 1, 2, 3, 4, or 5, [0265] xb42 to xb44 may each independently be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, [0266] L.sub.301 to L.sub.306, L.sub.321 to L.sub.326, and L.sub.331 to L.sub.336 may each independently be a single bond, a C.sub.1-C.sub.20 alkylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.20 alkenylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.20 alkynylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylene group that is unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylene group that is unsubstituted or substituted with at least one R.sub.10a, a divalent non-aromatic condensed polycyclic group that is unsubstituted or substituted with at least one R.sub.10a, or a divalent non-aromatic condensed heteropolycyclic group that is unsubstituted or substituted with at least one R.sub.10a, [0267] R.sub.301 to R.sub.305, R.sub.311 to R.sub.314, R.sub.321 to R.sub.324, and R.sub.331 to R.sub.336 may each independently be hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C.sub.1-C.sub.60 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.2-C.sub.60 alkynyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.10 cycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.10 heterocycloalkenyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 aryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.6-C.sub.60 arylthio group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroaryloxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heteroarylthio group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R.sub.10a, a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R.sub.10a, Si(Q.sub.1)(Q.sub.2)(Q.sub.3), B(Q.sub.1)(Q.sub.2), N(Q.sub.1)(Q.sub.2), P(Q.sub.1)(Q.sub.2), C(?O)(Q.sub.1), S(?O)(Q.sub.1), S(?O).sub.2(Q.sub.1), P(?O)(Q.sub.1)(Q.sub.2), or P(?S)(Q.sub.1)(Q.sub.2), [0268] neighboring two or more of R.sub.321(s) to R.sub.324(s) may optionally be bonded to each other to form a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0269] R.sub.10a may be: [0270] deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, or a nitro group; [0271] a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, or a C.sub.1-C.sub.60 alkoxy group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, a C.sub.1-C.sub.60 heteroaryloxy group, a C.sub.1-C.sub.60 heteroarylthio group, Si(Q.sub.11)(Q.sub.12)(Q.sub.13), N(Q.sub.11)(Q.sub.12), B(Q.sub.11)(Q.sub.12), C(?O)(Q.sub.11), S(?O).sub.2(Q.sub.11), P(?O)(Q.sub.11)(Q.sub.12), or any combination thereof; [0272] a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, a C.sub.1-C.sub.60 heteroaryloxy group, or a C.sub.1-C.sub.60 heteroarylthio group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, a C.sub.1-C.sub.60 alkoxy group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, a C.sub.1-C.sub.6 heteroaryloxygroup, a C.sub.1-C.sub.60 heteroarylthio group, Si(Q.sub.21)(Q.sub.22)(Q.sub.23), N(Q.sub.21)(Q.sub.22), B(Q.sub.21)(Q.sub.22), C(?O)(Q.sub.21), S(?O).sub.2(Q.sub.21), P(?O)(Q.sub.21)(Q.sub.22), or any combination thereof; or [0273] Si(Q.sub.31)(Q.sub.32)(Q.sub.33), N(Q.sub.31)(Q.sub.32), B(Q.sub.31)(Q.sub.32), C(?O)(Q.sub.31), S(?O).sub.2(Q.sub.31), or P(?O)(Q.sub.31)(Q.sub.32), [0274] Q.sub.11 to Q.sub.13, Q.sub.21 to Q.sub.23, Q.sub.31 to Q.sub.33, and Q.sub.301 to Q.sub.303 may each independently be: hydrogen; deuterium; F; Cl; Br; I; a hydroxyl group; a cyano group; a nitro group; a C.sub.1-C.sub.60 alkyl group; a C.sub.2-C.sub.60 alkenyl group; a C.sub.2-C.sub.60 alkynyl group; a C.sub.1-C.sub.60 alkoxy group; or a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, each unsubstituted or substituted with deuterium, F, a cyano group, a C.sub.1-C.sub.60 alkyl group, a C.sub.1-C.sub.60 alkoxy group, a phenyl group, a biphenyl group, or any combination thereof.

[0275] In one or more embodiments, the hole-transporting host may be selected from compounds HTH1 to HTH56:

##STR00101## ##STR00102## ##STR00103## ##STR00104## ##STR00105## ##STR00106## ##STR00107## ##STR00108## ##STR00109## ##STR00110## ##STR00111## ##STR00112##

[0276] In one or more embodiments, the electron-transporting host may be selected from compounds ETH1 to ETH86:

##STR00113## ##STR00114## ##STR00115## ##STR00116## ##STR00117## ##STR00118## ##STR00119## ##STR00120## ##STR00121## ##STR00122## ##STR00123## ##STR00124## ##STR00125## ##STR00126## ##STR00127## ##STR00128## ##STR00129## ##STR00130## ##STR00131##

[0277] In one or more embodiments, the first host compound and the second host compound may form an exciplex.

Phosphorescent Dopant

[0278] In one or more embodiments, the phosphorescent dopant may include at least one transition metal as a central metal.

[0279] The phosphorescent dopant may include a monodentate ligand, a bidentate ligand, a tridentate ligand, a tetradentate ligand, a pentadentate ligand, a hexadentate ligand, or any combination thereof.

[0280] In some embodiments, the phosphorescent dopant may be electrically neutral.

[0281] In one or more embodiments, the phosphorescent dopant may include the organometallic compound represented by Formula 1.

[0282] In one or more embodiments, the phosphorescent dopant may include an organometallic compound represented by Formula 401:

##STR00132##

[0283] In Formulae 401 and 402, [0284] M may be a transition metal (for example, iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), or thulium (Tm)), [0285] L.sub.401 may be a ligand represented by Formula 402, and xc1 may be 1, 2, or 3, wherein, when xc1 is 2 or more, two or more of L.sub.401 (s) may be identical to or different from each other, [0286] L.sub.402 may be an organic ligand, and xc2 may be 0, 1, 2, 3, or 4, wherein, when xc2 is 2 or more, two or more of L.sub.402(s) may be identical to or different from each other, [0287] X.sub.401 and X.sub.402 may each independently be N or C, [0288] ring A.sub.401 and ring A.sub.402 may each independently be a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, [0289] T.sub.401 may be a single bond, *O*, *S*, *C(?O)*, *N(Q.sub.411)-*, *C(Q.sub.411)(Q.sub.412)*, *C(Q.sub.411)?C(Q.sub.412)-*, *C(Q.sub.411)?*, or *?C?*, [0290] X.sub.403 and X.sub.404 may each independently be a chemical bond (for example, a covalent bond or a coordination bond), *O*, *S*, *N(Q.sub.413)-*, *B(Q.sub.413)-*, *P(Q.sub.413)-*, *C(Q.sub.413)(Q.sub.414)-*, or *Si(Q.sub.413)(Q.sub.414)*, [0291] Q.sub.411 to Q.sub.414 may each be the same as described with respect to Q.sub.1, [0292] R.sub.401 and R.sub.402 may each independently be hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.20 alkyl group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.20 alkoxy group unsubstituted or substituted with at least one R.sub.10a, a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, Si(Q.sub.401)(Q.sub.402)(Q.sub.403), N(Q.sub.401)(Q.sub.402), B(Q.sub.401)(Q.sub.402), C(?O)(Q.sub.401), S(?O).sub.2(Q.sub.401), or P(?O)(Q.sub.401)(Q.sub.402), [0293] Q.sub.401 to Q.sub.403 may each be the same as described with respect to Q.sub.1, [0294] xc11 and xc12 may each independently be an integer from 0 to 10, and [0295] and * in Formula 402 each indicate a binding site to M in Formula 401.

[0296] For example, in some embodiments, in Formula 402, i) X.sub.401 may be nitrogen and X.sub.402 may be carbon, or ii) each of X.sub.401 and X.sub.402 may be nitrogen.

[0297] In one or more embodiments, when xc1 in Formula 401 is 2 or more, two ring A.sub.401 (s) among two or more of L.sub.401(s) may optionally be linked to each other via T.sub.402, which is a linking group, and/or two ring A.sub.402(s) among two or more of L.sub.401 (s) may optionally be linked to each other via T.sub.403, which is a linking group (see Compounds PD1 to PD4 and PD7). T.sub.402 and T.sub.403 may each independently be as defined with respect to T.sub.401.

[0298] In Formula 401, L.sub.402 may be an organic ligand. For example, in some embodiments, L.sub.402 may include a halogen, a diketone group (for example, an acetylacetonate group), a carboxylic acid group (for example, a picolinate group), C(?O), an isonitrile group, a CN group, a phosphorus-containing group (for example, a phosphine group, a phosphite group, etc.), or any combination thereof.

[0299] In one or more embodiments, the phosphorescent dopant may include, for example, at least one selected from Compounds PD1 to PD39, and/or any combination thereof:

##STR00133## ##STR00134## ##STR00135## ##STR00136## ##STR00137## ##STR00138## ##STR00139## ##STR00140## ##STR00141## ##STR00142##

Fluorescent Dopant

[0300] In one or more embodiments, the fluorescent dopant may include an amine group-containing compound, a styryl group-containing compound, or any combination thereof.

[0301] For example, in some embodiments, the fluorescent dopant may include a compound represented by Formula 501:

##STR00143##

[0302] In Formula 501, [0303] Ar.sub.501, L.sub.501 to L.sub.503, R.sub.501, and R.sub.502 may each independently be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0304] xd1 to xd3 may each independently be 0, 1, 2, or 3, and [0305] xd4 may be 1, 2, 3, 4, 5, or 6.

[0306] In some embodiments, Ar.sub.501 in Formula 501 may be a condensed cyclic group (for example, an anthracene group, a chrysene group, a pyrene group, etc.) in which three or more monocyclic groups are condensed together.

[0307] In some embodiments, xd4 in Formula 501 may be 2.

[0308] For example, in some embodiments, the fluorescent dopant may include: at least one selected from among Compounds FD1 to FD36; 4,4-bis(2,2-diphenylvinyl)-1,1-biphenyl (DPVBi); 4,4-bis[4-(N,N-diphenylamino)styryl]biphenyl (DPAVBi); and/or any combination thereof:

##STR00144## ##STR00145## ##STR00146## ##STR00147## ##STR00148## ##STR00149##

Delayed Fluorescence Material

[0309] In one or more embodiments, the emission layer may further include a delayed fluorescence material.

[0310] In the present disclosure, the delayed fluorescence material may be selected from compounds capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0311] The delayed fluorescence material included in the emission layer may act as a host or a dopant depending on the type or kind of other materials included in the emission layer.

[0312] In some embodiments, a difference between a triplet energy level (eV) of the delayed fluorescence material and a singlet energy level (eV) of the delayed fluorescence material may be greater than or equal to 0 eV and less than or equal to 0.5 eV. When the difference between the triplet energy level (eV) of the delayed fluorescence material and the singlet energy level (eV) of the delayed fluorescence material is satisfied within the range above, up-conversion from the triplet state to the singlet state of the delayed fluorescence materials may effectively occur, and thus, the organic light-emitting device 10 may have improved luminescence efficiency.

[0313] For example, in some embodiments, the delayed fluorescence material may include: i) a material including at least one electron donor (for example, a ? electron-rich C.sub.3-C.sub.60 cyclic group and/or the like, such as a carbazole group) and at least one electron acceptor (for example, a sulfoxide group, a cyano group, a ? electron-deficient nitrogen-containing C.sub.1-C.sub.60 cyclic group, and/or the like), ii) a material including a C.sub.8-C.sub.60 polycyclic group including at least two cyclic groups condensed to each other while sharing boron (B), and/or iii) the like.

[0314] Non-limiting examples of the delayed fluorescence material may include at least one selected from Compounds DF1 to DF9:

##STR00150## ##STR00151## ##STR00152##

Quantum Dot

[0315] In one or more embodiments, the emission layer may include a quantum dot.

[0316] The term quantum dot as utilized herein (e.g., each of the quantum dots) refers to a crystal of a semiconductor compound, and may include any material capable of emitting light of one or more suitable emission wavelengths according to the size of the crystal.

[0317] A diameter of the quantum dot may be, for example, in a range of about 1 nm to about 10 nm.

[0318] The quantum dot may be synthesized by a wet chemical process, a metal organic chemical vapor deposition process, a molecular beam epitaxy process, or any process similar thereto.

[0319] The wet chemical process is a method including mixing a precursor material with an organic solvent and then growing quantum dot particle crystals. When the crystal grows, the organic solvent naturally acts as a dispersant coordinated on the surface of the quantum dot crystal and controls the growth of the crystal so that the growth of quantum dot particles may be controlled or selected through a process which costs lower, and is easier than vapor deposition methods, such as metal organic chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE).

[0320] The quantum dot may include: a Group II-VI semiconductor compound; a Group III-V semiconductor compound; a Group III-VI semiconductor compound; a Group I-III-VI semiconductor compound; a Group IV-VI semiconductor compound; a Group IV element or compound; or any combination thereof.

[0321] Non-limiting examples of the group II-VI semiconductor compound may include a binary compound such as CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, and/or MgS; a ternary compound such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, and/or MgZnS; a quaternary compound such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, and/or HgZnSTe; or any combination thereof.

[0322] Non-limiting examples of the group III-V semiconductor compound may include a binary compound such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and/or InSb; a ternary compound such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InAlP, InNAs, InNSb, InPAs, and/or InPSb; a quaternary compound such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, and/or InAlPSb; or any combination thereof. In some embodiments, the group III-V semiconductor compound may further include a group II element. Non-limiting examples of the group III-V semiconductor compound further including the group II element may include InZnP, InGaZnP, InAlZnP, and/or the like.

[0323] Non-limiting examples of the group III-VI semiconductor compound may be: a binary compound, such as GaS, GaSe, Ga.sub.2Se.sub.3, GaTe, InS, InSe, In.sub.2S.sub.3, In.sub.2Se.sub.3, and/or InTe; a ternary compound, such as InGaS.sub.3, and/or InGaSe.sub.3; and/or any combination thereof.

[0324] Non-limiting examples of the group I-III-VI semiconductor compound may include a ternary compound such as AgInS, AgInS.sub.2, CuInS, CuInS.sub.2, CuGaO.sub.2, AgGaO.sub.2, and/or AgAlO.sub.2; or any combination thereof.

[0325] Non-limiting examples of the group IV-VI semiconductor compound may include: a binary compound such as SnS, SnSe, SnTe, PbS, PbSe, and/or PbTe; a ternary compound such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, and/or SnPbTe; a quaternary compound such as SnPbSSe, SnPbSeTe, and/or SnPbSTe; or any combination thereof.

[0326] The group IV element or compound may be: a single element material such as Si and/or Ge; a binary compound such as SiC and/or SiGe; or any combination thereof.

[0327] Each element included in a multi-element compound, such as the binary compound, the ternary compound, and the quaternary compound, may be present at a substantially uniform concentration or non-substantially uniform concentration in a particle.

[0328] In one or more embodiments, the quantum dot may have a single structure in which the concentration of each element in the quantum dot is substantially uniform, or may have a core-shell dual structure. For example, a material included in the core and a material included in the shell may be different from each other.

[0329] The shell of the quantum dot may act as a protective layer that prevents chemical degeneration of the core to maintain semiconductor characteristics, and/or as a charging layer that imparts electrophoretic characteristics to the quantum dot. The shell may be a single layer or a multi-layer. The interface between the core and the shell may have a concentration gradient in which the concentration of an element existing in the shell decreases toward the center of the core.

[0330] Non-limiting examples of the shell of the quantum dot may be an oxide of metal, metalloid, or non-metal, a semiconductor compound, or a combination thereof.

[0331] Non-limiting examples of the oxide of metal, metalloid, or non-metal suitable as a shell may be: a binary compound, such as SiO.sub.2, Al.sub.2O.sub.3, TiO.sub.2, ZnO, MnO, Mn.sub.2O.sub.3, Mn.sub.3O.sub.4, CuO, FeO, Fe.sub.2O.sub.3, Fe.sub.3O.sub.4, CoO, Co.sub.3O.sub.4, NiO, and/or the like; a ternary compound, such as MgAl.sub.2O.sub.4, CoFe.sub.2O.sub.4, NiFe.sub.2O.sub.4, CoMn.sub.2O.sub.4, and/or the like; or any combination thereof.

[0332] Non-limiting examples of the semiconductor compound suitable as a shell may be: as described herein, a Group II-VI semiconductor compound; a Group III-V semiconductor compound; a Group III-VI semiconductor compound; a Group I-III-VI semiconductor compound; a Group IV-VI semiconductor compound; or any combination thereof. Non-limiting examples of the semiconductor compound suitable as a shell may be CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0333] The quantum dot may have a full width of half maximum (FWHM) of the emission wavelength spectrum of less than or equal to about 45 nm, less than or equal to about 40 nm, or for example, less than or equal to about 30 nm. When the FWHM of the quantum dot is within these ranges, the quantum dot may have improved color purity or improved color reproducibility. In some embodiments, because light emitted through the quantum dot is emitted in all directions, the wide viewing angle may be improved.

[0334] In some embodiments, the quantum dot may be in the form of substantially spherical, pyramidal, multi-arm, or cubic nanoparticles, nanotubes, nanowires, nanofibers, or nanoplate particles.

[0335] Because the energy band gap of the quantum dot may be adjusted by controlling the size of the quantum dot, light having one or more suitable wavelength bands may be obtained from a quantum dot emission layer. Accordingly, by utilizing quantum dots of different sizes, an organic light-emitting device that emits light of one or more suitable wavelengths may be implemented. In one or more embodiments, the size of the quantum dots may be selected to emit red light, green light, and/or blue light. In some embodiments, the size of the quantum dots may be configured to emit white light by combination of light of one or more suitable colors.

Electron Transport Region in Interlayer 130

[0336] The electron transport region may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., 1 consisting of) multiple different materials, or iii) a multi-layer structure including multiple layers including different materials.

[0337] The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0338] For example, in one or more embodiments, the electron transport region may have an electron transport layer/electron injection layer structure, a hole blocking layer/electron transport layer/electron injection layer structure, an electron control layer/electron transport layer/electron injection layer structure, or a buffer layer/electron transport layer/electron injection layer structure, the constituting layers of each structure being sequentially stacked from the emission layer in each stated order.

[0339] In one or more embodiments, the electron transport region (for example, the buffer layer, the hole blocking layer, the electron control layer, or the electron transport layer in the electron transport region) may include a metal-free compound including at least one ? electron-deficient nitrogen-containing C.sub.1-C.sub.60 cyclic group.

[0340] For example, in some embodiments, the electron transport region may include a compound represented by Formula 601:

##STR00153##

[0341] In Formula 601, [0342] Ar.sub.601 and L.sub.601 may each independently be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, [0343] xe11 may be 1, 2, or 3, [0344] xe1 may be 0, 1, 2, 3, 4, or 5, [0345] R.sub.601 may be a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a, a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a, Si(Q.sub.601)(Q.sub.602)(Q.sub.603), C(?O)(Q.sub.601), S(?O).sub.2(Q.sub.601), or P(?O)(Q.sub.601)(Q.sub.602), [0346] Q.sub.601 to Q.sub.603 may each be the same as described with respect to Q.sub.1, [0347] xe21 may be 1, 2, 3, 4, or 5, and [0348] at least one selected from among Ar.sub.601, L.sub.601, and R.sub.601 may each independently be a ? electron-deficient nitrogen-containing C.sub.1-C.sub.60 cyclic group unsubstituted or substituted with at least one R.sub.10a.

[0349] In some embodiments, when xe11 in Formula 601 is 2 or more, two or more of Ar.sub.601(s) may be linked to each other via a single bond.

[0350] In some embodiments, Ar.sub.601 in Formula 601 may be an anthracene group unsubstituted or substituted with at least one R.sub.10a.

[0351] In one or more embodiments, the electron transport region may include a compound represented by Formula 601-1:

##STR00154##

[0352] In Formula 601-1, [0353] X.sub.614 may be N or C(R.sub.614), X.sub.615 may be N or C(R.sub.615), X.sub.616 may be N or C(R.sub.616), and at least one selected from among X.sub.614 to X.sub.616 may be N, [0354] L.sub.611 to L.sub.613 may each be the same as described with respect to L.sub.601, [0355] xe611 to xe613 may each be the same as described with respect to xe1, [0356] R.sub.611 to R.sub.613 may each be the same as described with respect to R.sub.601, and [0357] R.sub.614 to R.sub.616 may each independently be hydrogen, deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.20 alkyl group, a C.sub.1-C.sub.20 alkoxy group, a C.sub.3-C.sub.60 carbocyclic group unsubstituted or substituted with at least one R.sub.10a, or a C.sub.1-C.sub.60 heterocyclic group unsubstituted or substituted with at least one R.sub.10a.

[0358] For example, xe1 and xe611 to xe613 in Formulae 601 and 601-1 may each independently be 0, 1, or 2.

[0359] In one or more embodiments, the electron transport region may include: at least one selected from among Compounds ET1 to ET45; 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP); 4,7-diphenyl-1,10-phenanthroline (Bphen); tris(8-hydroxyquinolinato)aluminum (Alq.sub.3); bis(2-methyl-8-quinolinolato-N1,O8)-(1,1-biphenyl-4-olato)aluminum (BAlq); 3-(4-biphenyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole (TAZ); 4-(naphthalen-1-yl)-3,5-diphenyl-4H-1,2,4-triazole (NTAZ); and/or any combination thereof:

##STR00155## ##STR00156## ##STR00157## ##STR00158## ##STR00159## ##STR00160## ##STR00161## ##STR00162## ##STR00163## ##STR00164## ##STR00165## ##STR00166## ##STR00167## ##STR00168## ##STR00169##

[0360] A thickness of the electron transport region may be in a range of about 100 ? to about 5,000 ?, for example, about 160 ? to about 4,000 ?. When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, a thickness of the buffer layer, the hole blocking layer, or the electron control layer may be in a range of about 20 ? to about 1,000 ?, for example, about 30 ? to about 300 ?, and a thickness of the electron transport layer may be in a range of about 100 ? to about 1,000 ?, for example, about 150 ? to about 500 ?. When the thicknesses of the buffer layer, the hole blocking layer, the electron control layer, the electron transport layer, and/or the electron transport region are within these ranges, satisfactory electron transporting characteristics may be obtained without a substantial increase in driving voltage.

[0361] In one or more embodiments, the electron transport region (for example, the electron transport layer in the electron transport region) may further include, in addition to the materials described above, a metal-containing material.

[0362] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex, or any combination thereof. A metal ion of the alkali metal complex may be a Li ion, a Na ion, a K ion, a Rb ion, or a Cs ion, and a metal ion of the alkaline earth metal complex may be a Be ion, a Mg ion, a Ca ion, a Sr ion, or a Ba ion. A ligand coordinated with the metal ion of the alkali metal complex or the alkaline earth-metal complex may include a hydroxyquinoline, a hydroxyisoquinoline, a hydroxybenzoquinoline, a hydroxyacridine, a hydroxyphenanthridine, a hydroxyphenyloxazole, a hydroxyphenylthiazole, a hydroxyphenyloxadiazole, a hydroxyphenylthiadiazole, a hydroxyphenylpyridine, a hydroxyphenylbenzimidazole, a hydroxyphenylbenzothiazole, a bipyridine, a phenanthroline, a cyclopentadiene, or any combination thereof.

[0363] For example, in some embodiments, the metal-containing material may include a Li complex. The Li complex may include, for example, Compound ET-D1 (LiQ) or ET-D2:

##STR00170##

[0364] In one or more embodiments, the electron transport region may include an electron injection layer that facilitates the injection of electrons from the second electrode 150. The electron injection layer may directly contact the second electrode 150.

[0365] The electron injection layer may have: i) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) a single material, ii) a single-layer structure including (e.g., consisting of) a single layer including (e.g., consisting of) multiple different materials, or iii) a multi-layer structure including multiple layers including different materials.

[0366] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0367] The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metal may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metal may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0368] The alkali metal-containing compound, the alkaline earth metal-containing compound, and the rare earth metal-containing compound may respectively be oxides, halides (for example, fluorides, chlorides, bromides, iodides, etc.), or tellurides of the alkali metal, the alkaline earth metal, and the rare earth metal, or any combination thereof.

[0369] The alkali metal-containing compound may include: alkali metal oxides, such as Li.sub.2O, Cs.sub.2O, K.sub.2O, and/or the like; alkali metal halides, such as LiF, NaF, CsF, KF, LiI, NaI, CsI, KI, and/or the like; or any combination thereof. The alkaline earth metal-containing compound may include an alkaline earth metal compound, such as BaO, SrO, CaO, Ba.sub.xSr.sub.1-xO (wherein x is a real number satisfying 0<x<1), Ba.sub.xCa.sub.1-xO (wherein x is a real number satisfying 0<x<1), and/or the like. The rare earth metal-containing compound may include YbF.sub.3, ScF.sub.3, Sc.sub.2O.sub.3, Y.sub.2O.sub.3, Ce.sub.2O.sub.3, GdF.sub.3, TbF.sub.3, YbI.sub.3, ScI.sub.3, TbI.sub.3, or any combination thereof. In some embodiments, the rare earth metal-containing compound may include lanthanide metal tellurides. Non-limiting examples of the lanthanide metal telluride may be LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La.sub.2Te.sub.3, Ce.sub.2Te.sub.3, Pr.sub.2Te.sub.3, Nd.sub.2Te.sub.3, Pm.sub.2Te.sub.3, Sm.sub.2Te.sub.3, Eu.sub.2Te.sub.3, Gd.sub.2Te.sub.3, Tb.sub.2Te.sub.3, Dy.sub.2Te.sub.3, Ho.sub.2Te.sub.3, Er.sub.2Te.sub.3, Tm.sub.2Te.sub.3, Yb.sub.2Te.sub.3, Lu.sub.2Te.sub.3, and/or the like.

[0370] The alkali metal complex, the alkaline earth-metal complex, and the rare earth metal complex may include i) one of ions of the alkali metal, the alkaline earth metal, and the rare earth metal, respectively, and ii) a ligand bonded to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, 1 hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenyl benzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0371] In one or more embodiments, the electron injection layer may include (e.g., consist of) an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof, as described above. In one or more embodiments, the electron injection layer may further include an organic material (for example, a compound represented by Formula 601).

[0372] In some embodiments, the electron injection layer may include (e.g., consist of) i) an alkali metal-containing compound (for example, alkali metal halide), ii) a) an alkali metal-containing compound (for example, alkali metal halide); and b) an alkali metal, an alkaline earth metal, a rare earth metal, or any combination thereof. For example, in some embodiments, the electron injection layer may be a KI:Yb co-deposited layer, an RbI:Yb co-deposited layer, a LiF:Yb co-deposited layer, and/or the like.

[0373] When the electron injection layer further includes an organic material, an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth-metal complex, a rare earth metal complex, or any combination thereof may be substantially uniformly or non-uniformly dispersed in a matrix including the organic material.

[0374] A thickness of the electron injection layer may be in a range of about 1 ? to about 100 ?, and, for example, about 3 ? to about 90 ?. When the thickness of the electron injection layer is within the ranges above, satisfactory electron injection characteristics may be obtained without a substantial increase in driving voltage.

Second Electrode 150

[0375] The second electrode 150 may be on the interlayer 130 having a structure as described above. In one or more embodiments, the second electrode 150 may be a cathode, which is an electron injection electrode, and as a material for forming the second electrode 150, a metal, an alloy, an electrically conductive compound, or any combination thereof, each having a low-work function, may be utilized.

[0376] The second electrode 150 may include lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (AlLi), calcium (Ca), magnesium-indium (MgIn), magnesium-silver (MgAg), ytterbium (Yb), silver-ytterbium (AgYb), ITO, IZO, or any combination thereof. The second electrode 150 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0377] The second electrode 150 may have a single-layer structure or a multi-layer structure including multiple layers.

Capping Layer

[0378] A first capping layer may be arranged outside the first electrode 110, and/or a second capping layer may be arranged outside the second electrode 150. In some embodiments, the organic light-emitting device 10 may have a structure in which the first capping layer, the first electrode 110, the interlayer 130, and the second electrode 150 are sequentially stacked in the stated order, a structure in which the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are sequentially stacked in the stated order, or a structure in which the first capping layer, the first electrode 110, the interlayer 130, the second electrode 150, and the second capping layer are sequentially stacked in the stated order.

[0379] In some embodiments, light generated in the emission layer of the interlayer 130 of the organic light-emitting device 10 may be extracted (directed) toward the outside through the first electrode 110 which is a semi-transmissive electrode or a transmissive electrode, and the first capping layer. In some embodiments, light generated in the emission layer of the interlayer 130 of the organic light-emitting device may be extracted (directed) toward the outside through the second electrode 150 which is a semi-transmissive electrode or a transmissive electrode, and the second capping layer.

[0380] The first capping layer and the second capping layer may increase external emission efficiency according to the principle of constructive interference. Accordingly, the light extraction efficiency of the organic light-emitting device 10 is increased, so that the luminescence efficiency of the organic light-emitting device 10 may be improved.

[0381] Each of the first capping layer and the second capping layer may include a material having a refractive index of greater than or equal to 1.6 (e.g., at 589 nm).

[0382] The first capping layer and the second capping layer may each independently be an organic capping layer including an organic material, an inorganic capping layer including an inorganic material, or an organic-inorganic composite capping layer including an organic material and an inorganic material.

[0383] At least one selected from among the first capping layer and the second capping layer may (e.g., the first capping layer and the second capping layer may each) independently include carbocyclic compounds, heterocyclic compounds, amine group-containing compounds, porphine derivatives, phthalocyanine derivatives, a naphthalocyanine derivatives, alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine group-containing compound may optionally be substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In some embodiments, at least one selected from among the first capping layer and the second capping layer may (e.g., the first capping layer and the second capping layer may each) independently include an amine group-containing compound.

[0384] In one or more embodiments, at least one selected from among the first capping layer and the second capping layer may (e.g., the first capping layer and the second capping layer may each) independently include a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof.

[0385] In one or more embodiments, at least one selected from among the first capping layer and the second capping layer may (e.g., the first capping layer and the second capping layer may each) independently include: at least one selected from Compounds HT28 to HT33; Compounds CP1 to CP6; p-NPB; and/or any combination thereof:

##STR00171## ##STR00172##

Film

[0386] The organometallic compound (e.g., the organic light-emitting device 10) represented by Formula 1 may be included in one or more suitable films. Accordingly, one or more aspects of the embodiments of the present disclosure are directed toward a film including an organometallic compound represented by Formula 1. The film may be, for example, an optical member (or a light control member) (for example, a color filter, a color conversion member, a capping layer, a light extraction efficiency enhancement layer, a selective light absorbing layer, a polarizing layer, a quantum dot-containing layer, or like), a light-blocking member (for example, a light reflective layer, a light absorbing layer, and/or the like), or a protective member (for example, an insulating layer, a dielectric layer, and/or the like).

Electronic Apparatus

[0387] The organic light-emitting device may be included in one or more suitable electronic apparatuses. For example, the electronic apparatus including the organic light-emitting device may be a light-emitting apparatus, an authentication apparatus, and/or the like.

[0388] In one or more embodiments, the electronic apparatus (for example, a light-emitting apparatus) may further include, in addition to the organic light-emitting device, i) a color filter, ii) a color conversion layer, or iii) a color filter and a color conversion layer. The color filter and/or the color conversion layer may be arranged in at least one travel direction of light emitted from the organic light-emitting device. For example, in some embodiments, the light emitted from the organic light-emitting device may be blue light or white light (e.g., combined white light). The organic light-emitting device may be the same as described above. In some embodiments, the color conversion layer may include a quantum dot. The quantum dot may be, for example, the quantum dot as described herein.

[0389] The electronic apparatus may include a first substrate. The first substrate may include a plurality of subpixel areas, the color filter may include a plurality of color filter areas respectively corresponding to the subpixel areas, and the color conversion layer may include a plurality of color conversion areas respectively corresponding to the subpixel areas.

[0390] A pixel-defining film may be arranged among the subpixel areas to define each of the subpixel areas.

[0391] The color filter may further include a plurality of color filter areas and light-shielding patterns arranged among the color filter areas, and the color conversion layer may further include a plurality of color conversion areas and light-shielding patterns arranged among the color conversion areas.

[0392] The plurality of color filter areas (or the plurality of color conversion areas) may include a first area to emit first color light, a second area to emit second color light, and/or a third area to emit third color light, wherein the first color light, the second color light, and/or the third color light may have different maximum emission wavelengths from one another. For example, in some embodiments, the first color light may be red light, the second color light may be green light, and the third color light may be blue light. For example, in some embodiments, the plurality of color filter areas (or the plurality of color conversion areas) may include quantum dots. In some embodiments, the first area may include a red quantum dot to emit red light, the second area may include a green quantum dot to emit green light, and the third area may not include a (e.g., may exclude any) quantum dot. Details on the quantum dot may be referred to the descriptions provided herein. The first area, the second area, and/or the third area may each further include a scatter.

[0393] For example, in some embodiments, the organic light-emitting device may be to emit first light, the first area may be to absorb the first light to emit first-first color light, the second area may be to absorb the first light to emit second-first color light, and the third area may be to absorb the first light to emit third-first color light. Here, the first-first color light, the second-first color light, and the third-first color light may have different maximum emission wavelengths. In some embodiments, the first light may be blue light, the first-first color light may be red light, the second-first color light may be green light, and the third-first color light may be blue light.

[0394] In one or more embodiments, the electronic apparatus may further include a thin-film transistor in addition to the organic light-emitting device as described above. The thin-film transistor may include a source electrode, a drain electrode, and an active layer, wherein one selected from the source electrode and the drain electrode may be electrically connected to the first electrode or the second electrode of the organic light-emitting device.

[0395] The thin-film transistor may further include a gate electrode, a gate insulating film, and/or the like.

[0396] The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, an oxide semiconductor, and/or the like.

[0397] In one or more embodiments, the electronic apparatus may further include a sealing portion for sealing the organic light-emitting device. The sealing portion may be arranged between the color filter and/or the color conversion layer and the organic light-emitting device. The sealing portion allows light from the light-emitting device to be extracted to the outside, and concurrently (e.g., simultaneously) prevents ambient air and moisture from penetrating into the light-emitting device. The sealing portion may be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion may be a thin-film encapsulation layer including at least one layer of an organic layer and/or an inorganic layer. When the sealing portion is a thin film encapsulation layer, the electronic apparatus may be flexible.

[0398] One or more suitable functional layers may be additionally provided and located on the sealing portion, in addition to the color filter and/or the color conversion layer, according to the utilization of the electronic apparatus. The functional layers may include a touch screen layer, a polarizing layer, and/or the like. The touch screen layer may be a pressure-sensitive touch screen layer, a capacitive touch screen layer, or an infrared touch screen layer.

[0399] The authentication apparatus may further include, in addition to the light-emitting device as described above, a biometric information collector. The authentication apparatus may be, for example, a biometric authentication apparatus that authenticates an individual by utilizing biometric information of a living body (for example, fingertips, pupils, etc.) of the individual.

[0400] The electronic apparatus may be applied to one or more of suitable displays, light sources, lighting, personal computers (for example, a mobile personal computer), mobile phones, digital cameras, electronic organizers, electronic dictionaries, electronic game machines, medical instruments (for example, electronic thermometers, sphygmomanometers, blood glucose meters, pulse measurement devices, pulse wave measurement devices, electrocardiogram displays, ultrasonic diagnostic devices, or endoscope displays), fish finders, one or more suitable measuring instruments, meters (for example, meters for a vehicle, an aircraft, and a vessel), projectors, and/or the like.

Description of FIGS. 2 and 3

[0401] FIG. 2 is a cross-sectional view of an electronic apparatus (e.g., (organic) light-emitting apparatus) according to one or more embodiments of the present disclosure.

[0402] The electronic apparatus (e.g., (organic) light-emitting apparatus) of FIG. 2 may include a substrate 100, a thin-film transistor (TFT), an organic light-emitting device (e.g., the organic light-emitting device 10 in FIG. 1), and an encapsulation portion 300 that seals the organic light-emitting device.

[0403] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. A buffer layer 210 may be arranged on the substrate 100. The buffer layer 210 may prevent or reduce penetration of impurities through the substrate 100 and may provide a flat surface on the substrate 100.

[0404] The TFT may be arranged on the buffer layer 210. The TFT may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0405] The active layer 220 may include an inorganic semiconductor such as silicon or polysilicon, an organic semiconductor, or an oxide semiconductor, and may include a source region, a drain region, and a channel region.

[0406] A gate insulating film 230 for insulating the active layer 220 from the gate electrode 240 may be arranged on the active layer 220, and the gate electrode 240 may be arranged on the gate insulating film 230.

[0407] An interlayer insulating film 250 may be arranged on the gate electrode 240. The interlayer insulating film 250 may be arranged between the gate electrode 240 and the source electrode 260 and between the gate electrode 240 and the drain electrode 270, to insulate the electrodes from one another.

[0408] The source electrode 260 and the drain electrode 270 may be arranged on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 may be formed to expose the source region and the drain region of the active layer 220, and the source electrode 260 and the drain electrode 270 may be arranged in contact with the exposed portions of the source region and the drain region of the active layer 220, respectively.

[0409] The TFT may be electrically connected to the organic light-emitting device to drive the organic light-emitting device, and may be covered and protected by a passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or any combination thereof. The organic light-emitting device may include a first electrode 110, an interlayer 130, and a second electrode 150.

[0410] The first electrode 110 may be arranged on the passivation layer 280. The passivation layer 280 may be arranged to expose a portion of the drain electrode 270, not fully covering the drain electrode 270, and the first electrode 110 may be arranged to be connected to the exposed portion of the drain electrode 270.

[0411] A pixel defining layer 290 including an insulating material may be arranged on the first electrode 110. The pixel defining layer 290 may expose a certain region of 1 the first electrode 110, and the interlayer 130 may be formed in the exposed region of the first electrode 110. The pixel defining layer 290 may be a polyimide-based organic film or a polyacrylic-based organic film. In some embodiments, at least some layers of the interlayer 130 may extend beyond the upper portion of the pixel defining layer 290 to be arranged in the form of a common layer.

[0412] The second electrode 150 may be arranged on the interlayer 130, and a capping layer 170 may be additionally formed on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

[0413] The encapsulation portion 300 may be arranged on the capping layer 170. The encapsulation portion 300 may be arranged on the organic light-emitting device to protect the organic light-emitting device from moisture and/or oxygen. The encapsulation portion 300 may include: an inorganic film including silicon nitride (SiN.sub.x), silicon oxide (SiO.sub.x), indium tin oxide, indium zinc oxide, or any combination thereof; an organic film including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, an acrylic-based resin (for example, polymethyl methacrylate, polyacrylic acid, and/or the like), an epoxy-based resin (for example, aliphatic glycidyl ether (AGE), and/or the like), or any combination thereof; or any combination of the inorganic films and the organic films.

[0414] FIG. 3 shows a cross-sectional view showing an electronic apparatus according to one or more embodiments of the present disclosure.

[0415] The electronic apparatus of FIG. 3 may be substantially the same as the electronic apparatus of FIG. 2, except that a light-shielding pattern 500 and a functional region 400 are additionally arranged on the encapsulation portion 300. The functional region 400 may be i) a color filter area, ii) a color conversion area, or iii) a combination of the color filter area and the color conversion area. In some embodiments, the organic light-emitting device included in the electronic apparatus of FIG. 3 may be a tandem organic light-emitting device.

Description of FIG. 4

[0416] FIG. 4 is a schematic perspective view of electronic equipment 1 including the organic light-emitting device according to one or more embodiments of the present disclosure. The electronic equipment 1 may be, as a device apparatus that displays a moving image or still image, a portable electronic equipment, such as a mobile phone, a smart phone, a tablet personal computer (PC), a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (PMP), a navigation, or a ultra mobile PC (UMPC), as well as one or more suitable products, such as a television, a laptop, a monitor, a billboards, or an Internet of things (IOT). The electronic equipment 1 may be such a product above or a part thereof. In some embodiments, the electronic equipment 1 may be a wearable device, such as a smart watch, a watch phone, a glasses-type or kind display, or a head mounted display (HMD), or a part of the wearable device. However, embodiments of the present disclosure are not limited thereto. For example, in one or more embodiments, the electronic equipment 1 may include a dashboard of a vehicle, a center fascia of a vehicle, a center information display arranged on a dashboard of a vehicle, a room mirror display replacing a side mirror of a vehicle, an entertainment display for the rear seat of a vehicle or a display arranged on the back of the front seat, or a head up display (HUD) installed in the front of a vehicle or projected on a front window glass, and/or a computer generated hologram augmented reality head up display (CGH AR HUD). FIG. 4 illustrates an embodiment in which the electronic equipment 1 is a smart phone for convenience of explanation.

[0417] The electronic equipment 1 shown in FIG. 4 may include a display area DA and a non-display area NDA outside the display area DA. A display device of the electronic equipment 1 may implement an image through an array of a plurality of pixels that are two-dimensionally arranged in the display area DA.

[0418] The non-display area NDA may be an area that does not display an image, and may entirely surround the display area DA. On the non-display area NDA, a driver for providing electrical signals or power to display devices arranged on the display area DA may be arranged. On the non-display area NDA, a pad, which is an area to which an electronic element or a printing circuit board, may be electrically connected, may be arranged.

[0419] In the electronic equipment 1, a length in the x-axis direction and a length in the y-axis direction may be different from each other. In some embodiments, as shown in FIG. 4, the length in the x-axis direction may be shorter than the length in the y-axis direction. In one or more embodiments, the length in the x-axis direction may be the same as the length in the y-axis direction. In one or more embodiments, the length in the x-axis direction may be longer than the length in the y-axis direction.

Descriptions of FIGS. 5 and 6A to 6C

[0420] FIG. 5 is a diagram illustrating an exterior of a vehicle 1000 as electronic equipment including the organic light-emitting device according to one or more embodiments of the present disclosure. FIGS. 6A to 6C are each a diagram schematically illustrating an interior of a vehicle 1000 according to one or more embodiments of the present disclosure.

[0421] Referring to FIGS. 5, 6A, 6B, and 6C, the vehicle 1000 may refer to one or more suitable apparatuses for moving an object to be transported, such as a human, an object, or an animal, from a departure point to a destination point. The vehicle 1000 may include a vehicle traveling on a road or a track, a vessel moving over the sea or a river, an airplane flying in the sky utilizing the action of air, and/or the like.

[0422] The vehicle 1000 may travel on a road or a track. The vehicle 1000 may move in a set or predetermined direction according to rotation of at least one wheel thereof. For example, the vehicle 1000 may include a three-wheeled or four-wheeled 1 vehicle, a construction machine, a two-wheeled vehicle, a prime mover device, a bicycle, or a train running on a track.

[0423] The vehicle 1000 may include a body having an interior and an exterior, and a chassis in which mechanical apparatuses necessary for driving are installed as other parts except for the body. The exterior of the body may include a front panel, a bonnet, a roof panel, a rear panel, a trunk, a pillar provided at a boundary between doors, and/or the like. The chassis of the vehicle 1000 may include a power generating device, a power transmitting device, a driving device, a steering device, a braking device, a suspension device, a transmission device, a fuel device, front and rear, left and right wheels, and/or the like.

[0424] The vehicle 1000 may include a side window glass 1100, a front window glass 1200, a side mirror 1300, a cluster 1400, a center fascia 1500, a passenger seat dashboard 1600, and a display device 2.

[0425] The side window glass 1100 and the front window glass 1200 may be partitioned by a pillar arranged between the side window glass 1100 and the front window glass 1200.

[0426] The side window glass 1100 may be installed on a side of the vehicle 1000. In some embodiments, the side window glass 1100 may be installed on a door of the vehicle 1000. A plurality of side window glasses 1100 may be provided and may face each other. In some embodiments, the side window glass 1100 may include a first side window glass 1110 and a second side window glass 1120. In some embodiments, the first side window glass 1110 may be arranged adjacent to the cluster 1400. The second side window glass 1120 may be arranged adjacent to the passenger seat dashboard 1600.

[0427] In some embodiments, the side window glasses 1100 may be spaced apart from each other in the x-axis direction or the ?x-axis direction. For example, the first side window glass 1110 and the second side window glass 1120 may be spaced apart from each other in the x-axis direction or the ?x-axis direction. In other words, an 1 imaginary straight line L connecting the side window glasses 1100 may extend in the x-axis direction or the ?x-axis direction. For example, an imaginary straight line L connecting the first side window glass 1110 and the second side window glass 1120 to each other may extend in the x-axis direction or the ?x-axis direction.

[0428] The front window glass 1200 may be installed in the front of the vehicle 1000. The front window glass 1200 may be arranged between the side window glasses 1100 facing each other.

[0429] The side mirror 1300 may provide a rear view of the vehicle 1000. The side mirror 1300 may be installed on the exterior of the vehicle body. In one embodiment, a plurality of side mirrors 1300 may be provided. Any one of the plurality of side mirrors 1300 may be arranged outside the first side window glass 1110. The other one of the plurality of side mirrors 1300 may be arranged outside the second side window glass 1120.

[0430] The cluster 1400 may be arranged in front of the steering wheel. The cluster 1400 may include a tachometer, a speedometer, a coolant thermometer, a fuel gauge, turn indicator, a high beam indicator, a warning light, a seat belt warning light, an odometer, a tachograph, an automatic shift selector indicator light, a door open warning light, an engine oil warning light, and/or a low fuel warning light.

[0431] The center fascia 1500 may include a control panel on which a plurality of buttons for adjusting an audio device, an air conditioning device, and/or a heater of a seat are disposed. The center fascia 1500 may be arranged on one side of the cluster 1400.

[0432] The passenger seat dashboard 1600 may be spaced apart from the cluster 1400 with the center fascia 1500 arranged therebetween. In some embodiments, the cluster 1400 may be arranged to correspond to a driver seat, and the passenger seat dashboard 1600 may be disposed to correspond to a passenger seat. In some embodiments, the cluster 1400 may be adjacent to the first side window glass 1110, 1 and the passenger seat dashboard 1600 may be adjacent to the second side window glass 1120.

[0433] In some embodiments, the display device 2 may include a display panel 3, and the display panel 3 may display an image. The display device 2 may be arranged inside the vehicle 1000. In some embodiments, the display device 2 may be arranged between the side window glasses 1100 facing each other. The display device 2 may be arranged on at least one selected from among the cluster 1400, the center fascia 1500, and the passenger seat dashboard 1600.

[0434] The display device 2 may include an organic light-emitting display device, an inorganic EL display device, a quantum dot display device, and/or the like. Hereinafter, as the display device 2 according to one or more embodiments of the present disclosure, an organic light-emitting display device including the organic light-emitting device according to the present disclosure will be described as an example, but one or more suitable types (kinds) of display devices as described above may be utilized in embodiments of the present disclosure.

[0435] Referring to FIG. 6A, in some embodiments, the display device 2 may be arranged on the center fascia 1500. In one embodiment, the display device 2 may display navigation information. In one embodiment, the display device 2 may display audio, video, and/or information regarding vehicle settings.

[0436] Referring to FIG. 6B, in some embodiments, the display device 2 may be arranged on the cluster 1400. When the display device 2 is arranged on the cluster 1400, the cluster 1400 may display driving information and/or the like through the display device 2. For example, the cluster 1400 may be implemented digitally. The digital cluster 1400 may display vehicle information and driving information as images. For example, a needle and a gauge of a tachometer and one or more suitable warning light icons may be displayed by a digital signal.

[0437] Referring to FIG. 6C, in some embodiments, the display device 2 may be arranged on the passenger seat dashboard 1600. The display device 2 may be embedded in the passenger seat dashboard 1600 or arranged on the passenger seat dashboard 1600. In some embodiments, the display device 2 arranged on the passenger seat dashboard 1600 may display an image related to information displayed on the cluster 1400 and/or information displayed on the center fascia 1500. In one or more embodiments, the display device 2 arranged on the passenger seat dashboard 1600 may display information different from information displayed on the cluster 1400 and/or information displayed on the center fascia 1500.

Manufacturing Method

[0438] Respective layers included in the hole transport region, the emission layer, and respective layers included in the electron transport region may be formed in a certain region by utilizing one or more suitable methods selected from vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, ink-jet printing, laser-printing, laser-induced thermal imaging, and/or the like.

[0439] When respective layers included in the hole transport region, the emission layer, and respective layers included in the electron transport region are formed by vacuum deposition, the deposition may be performed at a deposition temperature of about 100? C. to about 500? C., a vacuum degree of about 10.sup.?8 torr to about 10.sup.?3 torr, and a deposition speed of about 0.01 ?/sec to about 100 ?/sec, depending on a material to be included in a layer to be formed and the structure of a layer to be formed.

DEFINITION OF TERMS

[0440] The term C.sub.3-C.sub.60 carbocyclic group as utilized herein refers to a cyclic group including (e.g., consisting of) carbon only as a ring-forming atom and having three to sixty carbon atoms, and the term C.sub.1-C.sub.60 heterocyclic group as utilized herein refers to a cyclic group that has one to sixty carbon atoms and further has, in addition to carbon, a heteroatom as a ring-forming atom. The C.sub.3-C.sub.60 carbocyclic group and the C.sub.1-C.sub.60 heterocyclic group may each be a monocyclic group including (e.g., consisting of) one ring or a polycyclic group in which two or more rings are condensed with each other.

[0441] For example, the number of ring-forming atoms of the C.sub.1-C.sub.60 heterocyclic group may be from 3 to 61.

[0442] The cyclic group as utilized herein may include both (e.g., simultaneously) the C.sub.3-C.sub.60 carbocyclic group and the C.sub.1-C.sub.60 heterocyclic group.

[0443] The term ? electron-rich C.sub.3-C.sub.60 cyclic group as utilized herein refers to a cyclic group that has three to sixty carbon atoms and does not include *N?* as a ring-forming moiety, and the term ? electron-deficient nitrogen-containing C.sub.1-C.sub.60 cyclic group as utilized herein refers to a heterocyclic group that has one to sixty carbon atoms and includes *N?* as a ring-forming moiety.

[0444] For example, the C.sub.3-C.sub.60 carbocyclic group may be i) a T.sub.1 group or ii) a condensed cyclic group in which two or more T.sub.1 groups are condensed with each other (for example, a cyclopentadiene group, an adamantane group, a norbornane group, a benzene group, a pentalene group, a naphthalene group, an azulene group, an indacene group, an acenaphthylene group, a phenalene group, a phenanthrene group, an anthracene group, a fluoranthene group, a triphenylene group, a pyrene group, a chrysene group, a perylene group, a pentaphene group, a heptalene group, a naphthacene group, a picene group, a hexacene group, a pentacene group, a rubicene group, a coronene group, an ovalene group, an indene group, a fluorene group, a spiro-bifluorene group, a benzofluorene group, an indenophenanthrene group, or an indenoanthracene group), [0445] the C.sub.1-C.sub.60 heterocyclic group may be i) a T2 group, ii) a condensed cyclic group in which at least two T2 groups are condensed with each other, or iii) a condensed cyclic group in which at least one T2 group and at least one T.sub.1 group are condensed with each other (for example, a pyrrole group, a thiophene group, a furan group, an indole group, a benzoindole group, a naphthoindole group, an isoindole group, a benzoisoindole group, a naphthoisoindole group, a benzosilole group, a benzothiophene group, a benzofuran group, a carbazole group, a dibenzosilole group, a dibenzothiophene group, a dibenzofuran group, an indenocarbazole group, an indolocarbazole group, a benzofurocarbazole group, a benzothienocarbazole group, a benzosilolocarbazole group, a benzoindolocarbazole group, a benzocarbazole group, a benzonaphthofuran group, a benzonaphthothiophene group, a benzonaphthosilole group, a benzofurodibenzofuran group, a benzofurodibenzothiophene group, a benzothienodibenzothiophene group, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzoisoxazole group, a benzothiazole group, a benzoisothiazole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a benzoquinoline group, a benzoisoquinoline group, a quinoxaline group, a benzoquinoxaline group, a quinazoline group, a benzoquinazoline group, a phenanthroline group, a cinnoline group, a phthalazine group, a naphthyridine group, an imidazopyridine group, an imidazopyrimidine group, an imidazotriazine group, an imidazopyrazine group, an imidazopyridazine group, an azacarbazole group, an azafluorene group, an azadibenzosilole group, an azadibenzothiophene group, an azadibenzofuran group, and/or the like), [0446] the ? electron-rich C.sub.3-C.sub.60 cyclic group may be i) a T1 group, ii) a condensed cyclic group in which at least two T1 groups are condensed with each other, iii) a T3 group, iv) a condensed cyclic group in which at least two T3 groups are condensed with each other, or v) a condensed cyclic group in which at least one T3 group and at least one T1 group are condensed with each other (for example, the C.sub.3-C.sub.60 carbocyclic group, a 1H-pyrrole group, a silole group, a borole group, a 2H-pyrrole group, a 3H-pyrrole group, a thiophene group, a furan group, an indole group, a benzoindole group, a naphthoindole group, an isoindole group, a benzoisoindole group, a naphthoisoindole group, a benzosilole group, a benzothiophene group, a benzofuran group, a carbazole group, a dibenzosilole group, a dibenzothiophene group, a dibenzofuran group, an indenocarbazole group, an indolocarbazole group, a benzofurocarbazole group, a benzothienocarbazole group, a benzosilolocarbazole group, a benzoindolocarbazole group, a benzocarbazole group, a benzonaphthofuran group, a benzonaphthothiophene group, a benzonaphthosilole group, a benzofurodibenzofuran group, a benzofurodibenzothiophene group, a benzothienodibenzothiophene group, and/or the like), [0447] the ? electron-deficient nitrogen-containing C.sub.1-C.sub.60 cyclic group may be i) a T4 group, ii) a condensed cyclic group in which at least two T4 groups are condensed with each other, iii) a condensed cyclic group in which at least one T4 group and at least one T.sub.1 group are condensed with each other, iv) a condensed cyclic group in which at least one T4 group and at least one T3 group are condensed with each other, or v) a condensed cyclic group in which at least one T4 group, at least one T.sub.1 group, and at least one T3 group are condensed with one another (for example, a pyrazole group, an imidazole group, a triazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, a benzoxazole group, a benzoisoxazole group, a benzothiazole group, a benzoisothiazole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a benzoquinoline group, a benzoisoquinoline group, a quinoxaline group, a benzoquinoxaline group, a quinazoline group, a benzoquinazoline group, a phenanthroline group, a cinnoline group, a phthalazine group, a naphthyridine group, an imidazopyridine group, an imidazopyrimidine group, an imidazotriazine group, an imidazopyrazine group, an imidazopyridazine group, an azacarbazole group, an azafluorene group, an azadibenzosilole group, an azadibenzothiophene group, an azadibenzofuran group, and/or the like), [0448] the T1 group may be a cyclopropane group, a cyclobutane group, a cyclopentane group, a cyclohexane group, a cycloheptane group, a cyclooctane group, a cyclobutene group, a cyclopentene group, a cyclopentadiene group, a cyclohexene group, a cyclohexadiene group, a cycloheptene group, an adamantane group, a norbornane (or bicyclo[2.2.1]heptane) group, a norbornene group, a bicyclo[1.1.1]pentane group, a bicyclo[2.1.1]hexane group, a bicyclo[2.2.2]octane group, or a benzene group, [0449] the T2 group may be a furan group, a thiophene group, a 1H-pyrrole group, a silole group, a borole group, a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azasilole group, an azaborole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a tetrazine group, a pyrrolidine group, an imidazolidine group, a dihydropyrrole group, a piperidine group, a tetrahydropyridine group, a dihydropyridine group, a hexahydropyrimidine group, a tetrahydropyrimidine group, a dihydropyrimidine group, a piperazine group, a tetrahydropyrazine group, a dihydropyrazine group, a tetrahydropyridazine group, or a dihydropyridazine group, [0450] the T3 group may be a furan group, a thiophene group, a 1H-pyrrole group, a silole group, or a borole group, and [0451] the T4 group may be a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azasilole group, an azaborole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or a tetrazine group.

[0452] The terms the cyclic group, the C.sub.3-C.sub.60 carbocyclic group, the C.sub.1-C.sub.60 heterocyclic group, the ? electron-rich C.sub.3-C.sub.60 cyclic group, or the ? electron-deficient nitrogen-containing C.sub.1-C.sub.60 cyclic group as utilized herein refer to a group condensed to any cyclic group, a monovalent group, or a polyvalent (for example, a divalent group, a trivalent group, a tetravalent group, etc.) group according to the structure of a formula for which the corresponding term is utilized. In one or more embodiments, a benzene group may be a benzo group, a phenyl group, a phenylene group, and/or the like, which may be easily understood by one of ordinary skill in the art according to the structure of a formula including the benzene group.

[0453] Depending on context, in the present disclosure, a divalent group may refer or be a polyvalent group (e.g., trivalent, tetravalent, etc., and not just divalent) per, e.g., the structure of a formula in connection with which of the terms are utilized.

[0454] Non-limiting examples of the monovalent C.sub.3-C.sub.60 carbocyclic group and monovalent C.sub.1-C.sub.60 heterocyclic group are a C.sub.3-C.sub.10 cycloalkyl group, a C.sub.1-C.sub.10 heterocycloalkyl group, a C.sub.3-C.sub.10 cycloalkenyl group, a C.sub.1-C.sub.10 heterocycloalkenyl group, a C.sub.6-C.sub.60 aryl group, a C.sub.1-C.sub.60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, and a monovalent non-aromatic condensed heteropolycyclic group, and non-limiting examples of the divalent C.sub.3-C.sub.60 carbocyclic group and the divalent C.sub.1-C.sub.60 heterocyclic group may include a C.sub.3-C.sub.10 cycloalkylene group, a C.sub.1-C.sub.10 heterocycloalkylene group, a C.sub.3-C.sub.10 cycloalkenylene group, a C.sub.1-C.sub.10 heterocycloalkenylene group, a C.sub.6-C.sub.60 arylene group, a C.sub.1-C.sub.60 heteroarylene group, a divalent non-aromatic condensed polycyclic group, and a substituted or unsubstituted divalent non-aromatic condensed heteropolycyclic group.

[0455] The term C.sub.1-C.sub.60 alkyl group as utilized herein refers to a linear or branched aliphatic hydrocarbon monovalent group that has one to sixty carbon atoms, and non-limiting examples thereof are a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, a sec-butyl group, an isobutyl group, a tert-butyl group, an n-pentyl group, a tert-pentyl group, a neopentyl group, an isopentyl group, a sec-pentyl group, a 3-pentyl group, a sec-isopentyl group, an n-hexyl group, an isohexyl group, a sec-hexyl group, a tert-hexyl group, an n-heptyl group, an isoheptyl group, a sec-heptyl group, a tert-heptyl group, an n-octyl group, an isooctyl group, a sec-octyl group, a tert-octyl group, an n-nonyl group, an isononyl group, a sec-nonyl group, a tert-nonyl group, an n-decyl group, an isodecyl group, a sec-decyl group, and/or a tert-decyl group. The term C.sub.1-C.sub.60 alkylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.1-C.sub.60 alkyl group.

[0456] The term C.sub.2-C.sub.60 alkenyl group as utilized herein refers to a monovalent hydrocarbon group having at least one carbon-carbon double bond in the middle or at the terminus of the C.sub.2-C.sub.60 alkyl group, and non-limiting examples thereof are an ethenyl group, a propenyl group, a butenyl group, and/or the like. The term C.sub.2-C.sub.60 alkenylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.2-C.sub.60 alkenyl group.

[0457] The term C.sub.2-C.sub.60 alkynyl group as utilized herein refers to a monovalent hydrocarbon group having at least one carbon-carbon triple bond in the middle or at the terminus of the C.sub.2-C.sub.60 alkyl group, and non-limiting examples thereof include an ethynyl group, a propynyl group, and/or the like. The term C.sub.2-C.sub.60 alkynylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.2-C.sub.60 alkynyl group.

[0458] The term C.sub.1-C.sub.60 alkoxy group as utilized herein refers to a monovalent group represented by OA.sub.101 (wherein A.sub.101 is the C.sub.1-C.sub.60 alkyl group), and non-limiting examples thereof are a methoxy group, an ethoxy group, an isopropyloxy group, and/or the like.

[0459] The term C.sub.3-C.sub.10 cycloalkyl group as utilized herein refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and non-limiting examples thereof are a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, an adamantanyl group, a norbornanyl group (or bicyclo[2.2.1]heptyl group), a bicyclo[1.1.1]pentyl group, a bicyclo[2.1.1]hexyl group, a bicyclo[2.2.2]octyl group, and/or the like. The term C.sub.3-C.sub.10 cycloalkylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.3-C.sub.10 cycloalkyl group.

[0460] The term C.sub.1-C.sub.10 heterocycloalkyl group as utilized herein refers to a monovalent cyclic group of 1 to 10 carbon atoms, further including, in addition to carbon atoms, at least one heteroatom, as ring-forming atoms, and non-limiting examples thereof are a 1,2,3,4-oxatriazolidinyl group, a tetrahydrofuranyl group, a tetrahydrothiophenyl group, and/or the like. The term C.sub.1-C.sub.10 heterocycloalkylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.1-C.sub.10 heterocycloalkyl group.

[0461] The term C.sub.3-C.sub.10 cycloalkenyl group as utilized herein refers to a monovalent cyclic group that has three to ten carbon atoms and at least one carbon-carbon double bond in the ring thereof and no aromaticity, and non-limiting examples thereof are a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, and/or the like. The term C.sub.3-C.sub.10 cycloalkenylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.3-C.sub.10 cycloalkenyl group.

[0462] The term C.sub.1-C.sub.10 heterocycloalkenyl group as utilized herein refers to a monovalent cyclic group of 1 to 10 carbon atoms, further including, in addition to carbon atoms, at least one heteroatom, as ring-forming atoms, and having at least one double bond in the cyclic structure thereof. Non-limiting examples of the C.sub.1-C.sub.10 heterocycloalkenyl group are a 4,5-dihydro-1,2,3,4-oxatriazolyl group, a 2,3-dihydrofuranyl group, a 2,3-dihydrothiophenyl group, and/or the like. The term C.sub.1-C.sub.10 heterocycloalkenylene group as utilized herein refers to a divalent group having substantially the same structure as the C.sub.1-C.sub.10 heterocycloalkenyl group.

[0463] The term C.sub.6-C.sub.60 aryl group as utilized herein refers to a monovalent group having a carbocyclic aromatic system of 6 to 60 carbon atoms, and the term C.sub.6-C.sub.60 arylene group as utilized herein refers to a divalent group having a carbocyclic aromatic system of 6 to 60 carbon atoms. Non-limiting examples of the C.sub.6-C.sub.60 aryl group are a phenyl group, a pentalenyl group, a naphthyl group, an azulenyl group, an indacenyl group, an acenaphthyl group, a phenalenyl group, a phenanthrenyl group, an anthracenyl group, a fluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenyl group, a perylenyl group, a pentaphenyl group, a heptalenyl group, a naphthacenyl group, a picenyl group, a hexacenyl group, a pentacenyl group, a rubicenyl group, a coronenyl group, an ovalenyl group, and/or the like. When the C.sub.6-C.sub.60 aryl group and the C.sub.6-C.sub.60 arylene group each include two or more rings, the rings may be condensed with each other.

[0464] The term C.sub.1-C.sub.60 heteroaryl group as utilized herein refers to a monovalent group having a heterocyclic aromatic system of 1 to 60 carbon atoms, further including, in addition to carbon atoms, at least one heteroatom, as ring-forming atoms. The term C.sub.1-C.sub.60 heteroarylene group as utilized herein refers to a divalent group having a heterocyclic aromatic system of 1 to 60 carbon atoms, further including, in addition to carbon atoms, at least one heteroatom, as ring-forming atoms. Non-limiting examples of the C.sub.1-C.sub.60 heteroaryl group are a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, a pyridazinyl group, a triazinyl group, a quinolinyl group, a benzoquinolinyl group, an isoquinolinyl group, a benzoisoquinolinyl group, a quinoxalinyl group, a benzoquinoxalinyl group, a quinazolinyl group, a benzoquinazolinyl group, a cinnolinyl group, a phenanthrolinyl group, a phthalazinyl group, and/or a naphthyridinyl group. When the C.sub.1-C.sub.60 heteroaryl group and the C.sub.1-C.sub.60 heteroarylene group each include two or more rings, the rings may be condensed with each other.

[0465] The term monovalent non-aromatic condensed polycyclic group as utilized herein refers to a monovalent group (for example, having 8 to 60 carbon atoms) having two or more rings condensed to each other, only carbon atoms as ring-forming atoms, and no aromaticity in its entire molecular structure as a whole. Non-limiting examples of the monovalent non-aromatic condensed polycyclic group are an indenyl group, a fluorenyl group, a spiro-bifluorenyl group, a benzofluorenyl group, an indenophenanthrenyl group, an indeno anthracenyl group, and/or the like. The term divalent non-aromatic condensed polycyclic group as utilized herein refers to a divalent group having substantially the same structure as the monovalent non-aromatic condensed polycyclic group described above.

[0466] The term monovalent non-aromatic condensed heteropolycyclic group as utilized herein refers to a monovalent group (for example, having 1 to 60 carbon atoms) having two or more rings condensed to each other, further including, in addition to carbon atoms, at least one heteroatom, as ring-forming atoms, and having non-aromaticity in its entire molecular structure as a whole. Non-limiting examples of the monovalent non-aromatic condensed heteropolycyclic group are a pyrrolyl group, a thiophenyl group, a furanyl group, an indolyl group, a benzoindolyl group, a naphthoindolyl group, an isoindolyl group, a benzoisoindolyl group, a naphthoisoindolyl group, a benzosilolyl group, a benzothiophenyl group, a benzofuranyl group, a carbazolyl group, a dibenzosilolyl group, a dibenzothiophenyl group, a dibenzofuranyl group, an azacarbazolyl group, an azafluorenyl group, an azadibenzosilolyl group, an azadibenzothiophenyl group, an azadibenzofuranyl group, a pyrazolyl group, an imidazolyl group, a triazolyl group, a tetrazolyl group, an oxazolyl group, an isoxazolyl group, a thiazolyl group, an isothiazolyl group, an oxadiazolyl group, a thiadiazolyl group, a benzopyrazolyl group, a benzimidazolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzoxadiazolyl group, a benzothiadiazolyl group, an imidazopyridinyl group, an imidazopyrimidinyl group, an imidazotriazinyl group, an imidazopyrazinyl group, an imidazopyridazinyl group, an indeno carbazolyl group, an indolocarbazolyl group, a benzofurocarbazolyl group, a benzothienocarbazolyl group, a benzosilolocarbazolyl group, a benzoindolocarbazolyl group, a benzocarbazolyl group, a benzonaphthofuranyl group, a benzonaphthothiophenyl group, a benzonaphthosilolyl group, a benzofurodibenzofuranyl group, a benzofurodibenzothiophenyl group, and a benzothienodibenzothiophenyl group. The term divalent non-aromatic condensed heteropolycyclic group as utilized herein refers to a divalent group having substantially the same structure as the monovalent non-aromatic condensed heteropolycyclic group described above.

[0467] The term C.sub.6-C.sub.60 aryloxy group as utilized herein indicates OA.sub.102 (wherein A.sub.102 is a C.sub.6-C.sub.60 aryl group), and the term C.sub.6-C.sub.60 arylthio group as utilized herein indicates SA.sub.103 (wherein A.sub.103 is a C.sub.6-C.sub.60 aryl group).

[0468] The term C.sub.7-C.sub.60 arylalkyl group utilized herein refers to -A.sub.104A.sub.105 (where A.sub.104 may be a C.sub.1-C.sub.54 alkylene group, and A.sub.105 may be a C.sub.6-C.sub.59 aryl group), and the term C.sub.2-C.sub.60 heteroarylalkyl group utilized herein refers to -A.sub.106A.sub.107 (where A.sub.106 may be a C.sub.1-C.sub.59 alkylene group, and A.sub.107 may be a C.sub.1-C.sub.59 heteroaryl group).

[0469] The term R.sub.10a as utilized herein may be: [0470] deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, or a nitro group; [0471] a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, or a C.sub.1-C.sub.60 alkoxy group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, a C.sub.7-C.sub.60 arylalkyl group, a C.sub.2-C.sub.60 heteroarylalkyl group, Si(Q.sub.11)(Q.sub.12)(Q.sub.13), N(Q.sub.11)(Q.sub.12), B(Q.sub.11)(Q.sub.12), C(?O)(Q.sub.11), S(?O).sub.2(Q.sub.11), P(?O)(Q.sub.11)(Q.sub.12), or any combination thereof; [0472] a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, a C.sub.7-C.sub.60 arylalkyl group, or a C.sub.2-C.sub.60 heteroarylalkyl group, each unsubstituted or substituted with deuterium, F, Cl, Br, I, a hydroxyl group, a cyano group, a nitro group, a C.sub.1-C.sub.60 alkyl group, a C.sub.2-C.sub.60 alkenyl group, a C.sub.2-C.sub.60 alkynyl group, a C.sub.1-C.sub.60 alkoxy group, a C.sub.3-C.sub.60 carbocyclic group, a C.sub.1-C.sub.60 heterocyclic group, a C.sub.6-C.sub.60 aryloxy group, a C.sub.6-C.sub.60 arylthio group, a C.sub.7-C.sub.60 arylalkyl group, a C.sub.2-C.sub.60 heteroarylalkyl group, Si(Q.sub.21)(Q.sub.22)(Q.sub.23), N(Q.sub.21)(Q.sub.22), B(Q.sub.21)(Q.sub.22), C(?O)(Q.sub.21), S(?O).sub.2(Q.sub.21), P(?O)(Q.sub.21)(Q.sub.22), or any combination thereof; or [0473] Si(Q.sub.31)(Q.sub.32)(Q.sub.33), N(Q.sub.31)(Q.sub.32), B(Q.sub.31)(Q.sub.32), C(?O)(Q.sub.31), S(?O).sub.2(Q.sub.31), or P(?O)(Q.sub.31)(Q.sub.32).

[0474] Q.sub.1 to Q.sub.3, Q.sub.11 to Q.sub.13, Q.sub.21 to Q.sub.23 and Q.sub.31 to Q.sub.33 utilized herein may each independently be: hydrogen; deuterium; F; Cl; Br; I; a hydroxyl group; a cyano group; a nitro group; a C.sub.1-C.sub.60 alkyl group; a C.sub.2-C.sub.60 alkenyl group; a C.sub.2-C.sub.60 alkynyl group; a C.sub.1-C.sub.60 alkoxy group; a C.sub.3-C.sub.60 carbocyclic group or a C.sub.1-C.sub.60 heterocyclic group, each unsubstituted or substituted with deuterium, F, a cyano group, a C.sub.1-C.sub.60 alkyl group, a C.sub.1-C.sub.60 alkoxy group, a phenyl group, a biphenyl group, or any combination thereof; a C.sub.7-C.sub.60 arylalkyl group; or a C.sub.2-C.sub.60 heteroarylalkyl group.

[0475] The term heteroatom as utilized herein refers to any atom other than a carbon atom. Non-limiting examples of the heteroatom are O, S, N, P, Si, B, Ge, Se, and/or any combination thereof.

[0476] The term Ph as utilized herein refers to a phenyl group, the term Me as utilized herein refers to a methyl group, the term Et as utilized herein refers to an ethyl group, the term tert-Bu or Bu.sup.t as utilized herein refers to a tert-butyl group, and the term OMe as utilized herein refers to a methoxy group.

[0477] The term biphenyl group as utilized herein refers to a phenyl group substituted with a phenyl group. In other words, the biphenyl group is a substituted phenyl group having a C.sub.6-C.sub.60 aryl group as a substituent.

[0478] The term terphenyl group as utilized herein refers to a phenyl group substituted with a biphenyl group. In other words, the terphenyl group is a substituted phenyl group having, as a substituent, a C.sub.6-C.sub.60 aryl group substituted with a C.sub.6-C.sub.60 aryl group.

[0479] In the present disclosure, the x-axis, y-axis, and z-axis are not limited to three axes in an orthogonal coordinate system, and may be interpreted in a broad sense including these axes. For example, the x-axis, y-axis, and z-axis may refer to those orthogonal to each other, or may refer to those in different directions that are not orthogonal to each other.

[0480] * and * as utilized herein, unless defined otherwise, each refer to a binding site to a neighboring atom in a corresponding formula or moiety.

[0481] Hereinafter, compounds according to one or more embodiments and organic light-emitting devices according to one or more embodiments will be described in more detail with reference to Synthesis Examples and Examples. The wording B was utilized instead of A utilized in describing Synthesis Examples refers to that an identical molar equivalent of B was utilized in place of A.

Synthesis Example

Synthesis Example 1: Synthesis of Compound BD1

[0482] ##STR00173## ##STR00174##

(1) Synthesis of Intermediate BD1-a

[0483] 5-methoxy-2-(1H-pyrazol-5-yl)aniline (1.0 eq) and methylboronic acid (1.2 eq) were dissolved in toluene (0.1 M), followed by stirring at 110? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times (e.g., dissolved in dichloromethane and washed with water three times) to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 72%.

(2) Synthesis of Intermediate BD1-b

[0484] Intermediate BD1-a (1 eq), 2-bromo-4-(tert-butyl)pyridine (1.1 eq), CuI (0.01 eq), K.sub.2CO.sub.3 (2.0 eq), and L-Proline (0.02 eq) were dissolved in dimethyl sulfoxide (DMSO) (0.1 M), followed by stirring at 130? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 64%.

(3) Synthesis of Intermediate BD1-c

[0485] Intermediate BD1-b was dissolved in an acetic acid-HBr solution (acetic acid:HBr=1:1), followed by stirring at 80? C. for 24 hours. The reaction mixture was cooled at room temperature, and neutralized with NaOH. Then, an extraction process was performed thereon three times by utilizing dichloromethane and water (e.g., dissolved in dichloromethane and washed with water three times) to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 59%.

(4) Synthesis of Intermediate BD1-d

[0486] Intermediate BD1-c (1 eq), 1-(3-bromophenyl)-1H-benzo[d]imidazole (1.1 eq), CuI (0.01 eq), K.sub.2C03 (2.0 eq), and L-Proline (0.02 eq) were dissolved in DMSO (0.1 M), followed by stirring at 130? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 88%.

(5) Synthesis of Intermediate BD1-e

[0487] Intermediate BD1-d (1.0 eq) and iodomethane (3.0 eq) were dissolved in tetrahydrofuran (THF) (1.0 M), followed by stirring at 70? C. for 12 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 70%.

(6) Synthesis of Compound BD1

[0488] Intermediate BD1-e (1.0 eq), dichloro (1,2-dicyclooctadiene)platinum(Pt(COD)Cl.sub.2) (1.1 eq), and sodium acetate (2.0 eq) were dissolved in dioxane (0.1 M), followed by stirring at 120? C. for 72 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to synthesize Compound BD1 (yield: 28%).

Synthesis Example 2: Synthesis of Compound BD11

[0489] ##STR00175## ##STR00176##

(1) Synthesis of Intermediate BD11-a

[0490] Intermediate BD1-c (1 eq), 1,3-dibromobenzene (1.1 eq), CuI (0.01 eq), K.sub.2C03 (2.0 eq), and L-Proline (0.02 eq) were dissolved in DMSO (0.1 M), followed by stirring at 130? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 76%.

(2) Synthesis of Intermediate BD11-b

[0491] Intermediate BD11-a (1.0 eq), N1-([1,1:3,1-terphenyl]-2-yl-2,2,3,3,4,4,5,5,6,6-d10)benzene-1,2-diamine (1.0 eq), 2-dicyclohexylphosphino-2,6-dimethoxybiphenyl (SPhos) (0.07 eq), tris(dibenzylideneacetone)dipalladium(0) (Pd.sub.2(dba).sub.3) (0.05 eq), and sodium t-butoxide (2.0 eq) were suspended in toluene, heated to 100? C., and stirred for 4 hours. After completion of the reaction, a solvent was removed therefrom under reduced pressure, and extracted with methylene chloride and distilled water. The extracted organic layer was washed with a saturated aqueous sodium chloride solution and dried by utilizing magnesium sulfate. A residue obtained by removing the solvent therefrom was separated by column chromatography to obtain a target compound at a yield of 82%.

(3) Synthesis of Intermediate BD11-c

[0492] Intermediate BD11-b (1.0 eq), triethylorthoformate (50 eq), and HCl (25 eq) were dissolved, and then stirred at 80? C. for 12 hours. After cooling the reaction mixture to room temperature, triethylorthoformate was removed therefrom, and an extraction process was performed thereon three times by utilizing ethyl acetate and water to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 84%.

(4) Synthesis of Intermediate BD11-d

[0493] Intermediate BD11-c (1.0 eq) was dissolved in methanol (0.1 M), distilled water (0.025 M) was slowly added thereto and stirred, and NH.sub.4PF.sub.6 (1.2 eq) was added thereto and stirred for 12 hours at room temperature. The produced solid was filtered, washed three times with diethyl ether, and dried to obtain a target compound at a yield of 94%.

(5) Synthesis of Compound BD11

[0494] Intermediate BD11-d (1.0 eq), dichloro (1,2-dicyclooctadiene)platinum(Pt(COD)Cl.sub.2) (1.1 eq), and sodium acetate (2.0 eq) were dissolved in dioxane (0.1 M), followed by stirring at 120? C. for 72 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon three times by utilizing dichloromethane and water, to thereby obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to synthesize Compound BD11 (yield: 24%).

Synthesis Example 3: Synthesis of Compound BD24

[0495] ##STR00177## ##STR00178## ##STR00179##

(1) Synthesis of Intermediate BD24-a

[0496] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-a of Synthesis Example 1, except that isobutylboronic acid was utilized instead of methylboronic acid.

(2) Synthesis of Intermediate BD24-b

[0497] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-b of Synthesis Example 1, except that Intermediate BD24-a was utilized instead of Intermediate BD1-a.

(3) Synthesis of Intermediate BD24-c

[0498] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-c of Synthesis Example 1, except that Intermediate BD24-b was utilized instead of Intermediate BD1-b.

(4) Synthesis of Intermediate BD24-d

[0499] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-a of Synthesis Example 2, except that Intermediate BD24-c was utilized instead of Intermediate BD1-c.

(5) Synthesis of Intermediate BD24-e

[0500] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-b of Synthesis Example 2, except that N1-(3,5-di-tert-butyl-[1,1:3,1-terphenyl]-2-yl-2,3,4,5,6-d5)benzene-1,2-diamine was utilized instead of N1-([1,1:3,1-terphenyl]-2-yl-2,2,3,3,4,4,5,5,6,6-d10)benzene-1,2-diamine.

(6) Synthesis of Intermediate BD24-f

[0501] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-c of Synthesis Example 2, except that Intermediate BD24-e was utilized instead of Intermediate BD11-b.

(7) Synthesis of Intermediate BD24-g

[0502] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-d of Synthesis Example 2, except that Intermediate BD24-f was utilized instead of Intermediate BD11-c.

(8) Synthesis of Compound BD24

[0503] A target compound was obtained in substantially the same manner as utilized to prepare Compound BD11 of Synthesis Example 2, except that Intermediate BD24-g was utilized instead of Intermediate BD11-d.

Synthesis Example 4: Synthesis of Compound BD63

[0504] ##STR00180## ##STR00181## ##STR00182##

(1) Synthesis of Intermediate BD63-a

[0505] (2-amino-4-methoxyphenyl)boronic acid (1.2 eq), 3-chloro-5-iodo-1H-pyrazole (1.0 eq), Pd(OAc).sub.2 (0.2 eq), 2-dicyclohexylphosphino-2, 4, 6-triisopropylbiphenyl (XPhos) (0.2 eq), and cesium carbonate (2.0 eq) were dissolved in 1,4-dioxane-distilled water solution (1,4-dioxane:distilled water=3:1), followed by stirring at 100? C. for 12 hours. After completion of the reaction, a solvent was removed therefrom under reduced pressure, and extracted with methylene chloride and distilled water. The extracted organic layer was dried by utilizing magnesium sulfate. A residue obtained by removing the solvent therefrom was separated by column chromatography to obtain a target compound at a yield of 71%.

(2) Synthesis of Intermediate BD63-b

[0506] Intermediate BD63-a (1.0 eq) and propylboronic acid (1.2 eq) were dissolved in toluene (0.1 M), followed by stirring at 110? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 60%.

(3) Synthesis of Intermediate BD63-c

[0507] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-b of Synthesis Example 1, except that Intermediate BD63-b was utilized instead of Intermediate BD1-a.

(4) Synthesis of Intermediate BD63-d

[0508] Intermediate BD63-c (1.0 eq), phenylboronic acid (1.2 eq), Pd(OAc).sub.2 (0.2 eq), XPhos (0.2 eq), and cesium carbonate (2.0 eq) were dissolved in 1,4-dioxane-distilled water solution (1,4-dioxane:distilled water=3:1), followed by stirring at 100? C. for 12 hours. After completion of the reaction, a solvent was removed therefrom under reduced pressure, and extracted with methylene chloride and distilled water. The extracted organic layer was dried by utilizing magnesium sulfate. A residue obtained by removing the solvent therefrom was separated by column chromatography to obtain a target compound at a yield of 44%.

(5) Synthesis of Intermediate BD63-e

[0509] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-c of Synthesis Example 1, except that Intermediate BD63-d was utilized instead of Intermediate BD1-b.

(6) Synthesis of Intermediate BD63-f

[0510] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-a of Synthesis Example 2, except that Intermediate BD63-e was utilized instead of Intermediate BD1-c.

(7) Synthesis of Intermediate BD63-g

[0511] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-b of Synthesis Example 2, except that Intermediate BD63-f was utilized instead of Intermediate BD11-a.

(8) Synthesis of Intermediate BD63-h

[0512] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-c of Synthesis Example 2, except that Intermediate BD63-g was utilized instead of Intermediate BD11-b.

(9) Synthesis of Intermediate BD63-i

[0513] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-d of Synthesis Example 2, except that Intermediate BD63-h was utilized instead of Intermediate BD11-c.

(10) Synthesis of Compound BD63

[0514] A target compound was obtained in substantially the same manner as utilized to prepare Compound BD11 of Synthesis Example 2, except that Intermediate BD63-i was utilized instead of Intermediate BD11-d.

Synthesis Example 5: Synthesis of Compound BD76

[0515] ##STR00183## ##STR00184## ##STR00185##

(1) Synthesis of Intermediate BD76-a

[0516] (2-amino-4-methoxyphenyl)boronic acid (1.2 eq), 3-chloro-5-iodo-1H-pyrazole (1.0 eq), Pd(OAc).sub.2 (0.2 eq), XPhos (0.2 eq), and cesium carbonate (2.0 eq) were dissolved in 1,4-dioxane-distilled water solution (1,4-dioxane:distilled water=3:1), followed by stirring at 100? C. for 12 hours. After completion of the reaction, a solvent was removed therefrom under reduced pressure, and extracted with methylene chloride and distilled water. The extracted organic layer was dried by utilizing magnesium sulfate. A residue obtained by removing the solvent therefrom was separated by column chromatography to obtain a target compound at a yield of 71%.

(2) Synthesis of Intermediate BD76-b

[0517] Intermediate BD76-a (1.0 eq) and methylboronic acid (1.2 eq) were dissolved in toluene (0.1 M), followed by stirring at 110? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 65%.

(3) Synthesis of Intermediate BD76-c

[0518] Intermediate BD76-b (1 eq), 2-bromo-4-methylpyridine (1.1 eq), CuI (0.01 eq), K.sub.2CO.sub.3 (2.0 eq), and L-Proline (0.02 eq) were dissolved in DMSO (0.1 M), followed by stirring at 130? C. for 24 hours. The reaction mixture was cooled at room temperature, and an extraction process was performed thereon by utilizing dichloromethane and water three times to obtain an organic layer. The obtained organic layer was dried utilizing magnesium sulfate and then concentrated, and column chromatography was utilized to obtain a target compound at a yield of 60%.

(4) Synthesis of Intermediate BD76-d

[0519] Intermediate BD76-c (1.0 eq), phenylboronic acid (1.2 eq), Pd(OAc).sub.2 (0.2 eq), XPhos (0.2 eq), and cesium carbonate (2.0 eq) were dissolved in 1,4-dioxane-distilled water solution (1,4-dioxane:distilled water=3:1), followed by stirring at 100? C. for 12 hours. After completion of the reaction, a solvent was removed therefrom under reduced pressure, and extracted with methylene chloride and distilled water. The extracted organic layer was dried by utilizing magnesium sulfate. A residue obtained by removing the solvent therefrom was separated by column chromatography to obtain a target compound at a yield of 46%.

(5) Synthesis of Intermediate BD76-e

[0520] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-c of Synthesis Example 1, except that Intermediate BD76-d was utilized instead of Intermediate BD1-b.

(6) Synthesis of Intermediate BD76-f

[0521] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-a of Synthesis Example 2, except that Intermediate BD76-e was utilized instead of Intermediate BD1-c.

(7) Synthesis of Intermediate BD76-g

[0522] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD24-e of Synthesis Example 3, except that Intermediate BD76-f was utilized instead of Intermediate BD24-d.

(8) Synthesis of Intermediate BD76-h

[0523] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-c of Synthesis Example 2, except that Intermediate BD76-g was utilized instead of Intermediate BD11-b.

(9) Synthesis of Intermediate BD76-i

[0524] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-d of Synthesis Example 2, except that Intermediate BD76-h was utilized instead of Intermediate BD11-c.

(10) Synthesis of Compound BD76

[0525] A target compound was obtained in substantially the same manner as utilized to prepare Compound BD11 of Synthesis Example 2, except that Intermediate BD76-i was utilized instead of Intermediate BD11-d.

Synthesis Example 6: Synthesis of Compound BD86

[0526] ##STR00186## ##STR00187##

(1) Synthesis of Intermediate BD86-a

[0527] Intermediate BD76-c was dissolved in THF (0.1 M), and tert-butyl magnesium chloride (1.5 M) was slowly added dropwise thereto at 0? C., followed by stirring at room temperature for 12 hours. After completion of the reaction, a solvent was removed therefrom under reduced pressure, and extracted with methylene chloride and distilled water. The extracted organic layer was dried by utilizing magnesium sulfate. A residue obtained by removing the solvent therefrom was separated by column chromatography to obtain a target compound at a yield of 22%.

(2) Synthesis of Intermediate BD86-b

[0528] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD1-c of Synthesis Example 1, except that Intermediate BD86-a was utilized instead of Intermediate BD1-b.

(3) Synthesis of Intermediate BD86-c

[0529] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-a of Synthesis Example 2, except that Intermediate BD86-b was utilized instead of Intermediate BD1-c.

(4) Synthesis of Intermediate BD86-d

[0530] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-b of Synthesis Example 2, except that N1-(5-(tert-butyl)-[1,1:3,1-terphenyl]-2-yl-2,2,3,3,4,4,5,5,6,6-d10)benzene-1,2-diamine was utilized instead of N1-([1,1:3,1-terphenyl]-2-yl-2,2,3,3,4,4,5,5,6,6-d10)benzene-1,2-diamine.

(5) Synthesis of Intermediate BD86-e

[0531] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-c of Synthesis Example 2, except that Intermediate BD86-d was utilized instead of Intermediate BD11-b.

(6) Synthesis of Intermediate BD86-f

[0532] A target compound was obtained in substantially the same manner as utilized to prepare Intermediate BD11-d of Synthesis Example 2, except that Intermediate BD86-e was utilized instead of Intermediate BD11-c.

(7) Synthesis of Compound BD86

[0533] A target compound was obtained in substantially the same manner as utilized to prepare Compound BD11 of Synthesis Example 2, except that Intermediate BD86-f was utilized instead of Intermediate BD11-d.

EXAMPLES

Example 1

[0534] As an anode, a substrate with 15 ?/cm.sup.2 (1,200 ?) ITO glass thereon was cut to a size of 50 mm?50 mm?0.7 mm, sonicated in isopropyl alcohol and pure water each for 5 minutes, and then cleaned by exposure to ultraviolet rays and ozone for 30 minutes. The resultant ITO glass substrate was loaded onto a vacuum deposition apparatus.

[0535] 2-TNATA was vacuum-deposited on the anode to form a hole injection layer having a thickness of 600 ?, and NPB was vacuum-deposited on the hole injection layer to form a hole transport layer having a thickness of 300 ?.

[0536] Compound BD1 (10 wt % in relative to emission layer) as a dopant was co-deposited with a mixed host of Compounds ETH2 and HTH29 (at a weight ratio of 5:5) on the hole transport layer, so as to form an emission layer having a thickness of 300 ?. Subsequently, ETH2 was vacuum-deposited thereon to form a hole-blocking layer having a thickness of 50 ?. Then, Alq.sub.3 was deposited on the hole-blocking layer to form an electron transport layer having a thickness of 300 ?, and then, LiF, which is a halogenated alkali metal, was deposited on the electron transport layer to form an electron injection layer having a thickness of 10 ?, and Al was vacuum-deposited thereon to form an Al electrode having a thickness of 3,000 ? (cathode) to form an LiF/AI electrode, thereby completing the manufacture of an organic light-emitting device.

##STR00188##

Examples 2 to 6 and Comparative Examples 1 and 2

[0537] Organic light-emitting devices of Examples 2 to 6 and Comparative Examples 1 and 2 were each manufactured in substantially the same manner as in Example 1, except that, in forming an emission layer, for utilized as a dopant, a corresponding one of the compounds shown in Table 1 was utilized.

Evaluation Example 1: Evaluation of Characteristics of Organic Light-Emitting Devices

[0538] The driving voltage at 1,000 cd/m.sup.2, luminescence efficiency, maximum emission wavelength, and lifespan (T.sub.90) of the organic light-emitting devices manufactured in Examples 1 to 6 and Comparative Examples 1 and 2 were each measured by utilizing a Keithley SMU 236 and a luminance meter PR650. The results are shown in Table 1. In Table 1, the lifespan (T.sub.90) is a measure of the time (hr) taken until the luminance reaches 90% of the initial luminance.

TABLE-US-00001 TABLE 1 Maximum Emission Driving Luminescence emission Lifespan (T.sub.90, layer Luminance voltage efficiency wavelength hr) No. Dopant (cd/m.sup.2) (V) (cd/A) (nm) (at 1000 cd/m.sup.2) Example BD1 1000 4.4 24.3 461 87 1 Example BD11 1000 4.6 22.1 461 91 2 Example BD24 1000 4.7 23.2 461 100 3 Example BD63 1000 4.6 24.8 461 104 4 Example BD76 1000 4.7 21.4 461 108 5 Example BD86 1000 4.6 23.7 461 106 6 Compar- Compound 1000 5.3 15.5 463 60 ative A Example 1 Compar- Compound 1000 5.1 18.8 463 30 ative B Example 2 [00189]BD1 [00190]BD11 [00191]BD24 [00192]BD63 [00193]BD76 [00194]BD86 [00195]A [00196]B

[0539] From Table 1, it was confirmed that the organic light-emitting devices of Examples 1 to 6 each had a lower driving voltage, higher luminescence efficiency, and longer lifespan than the organic light-emitting devices of Comparative Examples 1 and 2.

[0540] According to one or more embodiments of the present disclosure, an organic light-emitting device including the organometallic compound of the present disclosure may have low driving voltage, high efficiency, high color purity and long lifespan. In one or more embodiments, a high-quality electronic apparatus and a consumer product may be manufactured by utilizing the organic light-emitting device of the present disclosure.

[0541] In the present disclosure, it will be understood that the terms comprise(s), include(s), or have/has specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

[0542] Throughout the present disclosure, when a component such as a layer, a film, a region, or a plate is mentioned to be placed on another component, it will be understood that it may be directly on another component or that another component may be interposed therebetween. In some embodiments, directly on may refer to that there are no additional layers, films, regions, plates, etc., between a layer, a film, a region, a plate, etc. and the other part. For example, directly on may refer to two layers or two members are disposed without utilizing an additional member such as an adhesive member therebetween.

[0543] In the present disclosure, although the terms first, second, etc., may be utilized herein to describe one or more elements, components, regions, and/or layers, these elements, components, regions, and/or layers should not be limited by these terms. These terms are only utilized to distinguish one component from another component.

[0544] As utilized herein, the singular forms a, an, one, and the are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, the use of may when describing embodiments of the present disclosure refers to one or more embodiments of the present disclosure.

[0545] In the present disclosure, when particles are spherical, diameter indicates a particle diameter or an average particle diameter, and when the particles are non-spherical, the diameter indicates a major axis length or an average major axis length. The diameter (or size) of the particles may be measured utilizing a scanning electron microscope or a particle size analyzer. As the particle size analyzer, for example, HORIBA, LA-950 laser particle size analyzer, may be utilized. When the size of the 1 particles is measured utilizing a particle size analyzer, the average particle diameter (or size) is referred to as D50. D50 refers to the average diameter (or size) of particles whose cumulative volume corresponds to 50 vol % in the particle size distribution (e.g., cumulative distribution), and refers to the value of the particle size corresponding to 50% from the smallest particle when the total number of particles is 100% in the distribution curve accumulated in the order of the smallest particle size to the largest particle size.

[0546] As utilized herein, the terms substantially, about, or similar terms are used as terms of approximation and not as terms of degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by those of ordinary skill in the art. About as used herein, is inclusive of the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, considering the measurement in question and the error associated with measurement of the particular quantity (i.e., the limitations of the measurement system). For example, about may mean within one or more standard deviations, or within ?30%, 20%, 10%, 5% of the stated value.

[0547] Any numerical range recited herein is intended to include all sub-ranges of the same numerical precision subsumed within the recited range. For example, a range of 1.0 to 10.0 is intended to include all subranges between (and including) the recited minimum value of 1.0 and the recited maximum value of 10.0, that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limitation recited herein is intended to include all lower numerical limitations subsumed therein and any minimum numerical limitation recited in this specification is intended to include all higher numerical limitations subsumed therein. Accordingly, Applicant reserves the right to amend this specification, including the claims, to expressly recite any sub-range subsumed within the ranges expressly recited herein.

[0548] The organic light-emitting device, the display device, the electronic apparatus, the electronic equipment, the consumer product, or any other relevant devices or components according to embodiments of the present disclosure described herein may be implemented utilizing any suitable hardware, firmware (e.g., an application-specific integrated circuit), software, or a combination of software, firmware, and hardware. For example, the various components of the device may be formed on one integrated circuit (IC) chip or on separate IC chips. Further, the various components of the device may be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on one substrate.

[0549] Further, the various components of the device may be a process or thread, running on one or more processors, in one or more computing devices, executing computer program instructions and interacting with other system components for performing the various functionalities described herein. The computer program instructions are stored in a memory which may be implemented in a computing device using a standard memory device, such as, for example, a random access memory (RAM). The computer program instructions may also be stored in other non-transitory computer readable media such as, for example, a CD-ROM, flash drive, or the like. Also, a person of skill in the art should recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or the functionality of a particular computing device may be distributed across one or more other computing devices without departing from the scope of the embodiments of the present disclosure.

[0550] It should be understood that embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each embodiment should typically be considered as available for other similar features or aspects in other embodiments. While one or more embodiments have been described with reference to the drawings, it will be understood by those of ordinary skill in the art that one or more suitable changes in form and details may be made therein without departing from the spirit and scope as defined by the following claims and equivalents thereof.