The disclosure pertains to an organic molecule for use in optoelectronic devices. The organic molecule has a structure of Formula I:

##STR00001## wherein X is selected from the group consisting of a direct bond, NR.sup.1, O, S, SiR.sup.1R.sup.2 and CR.sup.1R.sup.2; Y is selected from the group consisting of a direct bond, NR.sup.3, O, S, SiR.sup.3R.sup.4 and CR.sup.3R.sup.4; and R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently selected from the group consisting of: hydrogen, deuterium, N(R.sup.5).sub.2, OR.sup.5, SR.sup.5, Si(R.sup.5).sub.3, B(OR.sup.5).sub.2, OSO.sub.2R.sup.5, CF.sub.3, CN, halogen, C.sub.1-C.sub.40-alkyl, C.sub.1-C.sub.40-alkoxy, C.sub.1-C.sub.40-thioalkoxy, C.sub.2-C.sub.40-alkenyl, C.sub.2-C.sub.40-alkynyl, C.sub.6-C.sub.60-aryl, and C.sub.3-C.sub.57-heteroaryl.

a compound represented by formula (A):

##STR00001##

wherein Ar, R.sup.1 to R.sup.7, R.sup.11 to R.sup.14, R.sup.21 to R.sup.24, R.sup.31 to R.sup.34, *1, and R.sup.41 to R.sup.48 are as defined in the description provides organic electroluminescence devices with improved device performance.

The present disclosure relates to an organic electroluminescent compound, a plurality of host materials comprising the same, and an organic electroluminescent device. By comprising an organic electroluminescent compound according to the present disclosure and a plurality of host materials comprising the same, an organic electroluminescent device having a low driving voltage and/or a high luminous efficiency and/or a long lifespan can be prepared.

Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a first organic layer, the first organic layer comprises a first compound and a second compound, the first compound has specific HOMO and/or LUMO energy levels and a structure represented by Formula 1-1, and the second compound has a specific LUMO energy level and a structure represented by Formula 2-1. Compared with the related art, the combination of the first compound and the second compound can significantly improve the performance of the organic electroluminescent device, such as the efficiency of the device. Further provided is an electronic device comprising the organic electroluminescent device.

A compound of Formula I,

##STR00001##

is provided. In Formula I, one of Z.sup.1, Z.sup.2, and Z.sup.3 is N and the remainder are C; each of L.sup.1 and L.sup.2 is independently selected from a direct bond and a linking group; at least one of R.sup.1, R.sup.2, R.sup.A, R.sup.B, R.sup.C, R.sup.D, and R.sup.E comprises a group R* having a structure selected form the group consisting of Formula II, -Q(R.sup.3)(R.sup.4).sub.a(R.sup.5).sub.b, Formula III,

##STR00002##

and Formula IV,

##STR00003##

Each R, R′, R″, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.A, R.sup.B, R.sup.C, R.sup.D, R.sup.E, R.sup.F, R.sup.G, and R.sup.H is independently hydrogen or a General Substituent, with the proviso that group R* is not adamantyl. Formulations, OLEDs, and consumer products containing the compound are also provided.

Disclosed is an organic light-emitting device with high efficiency and long lifespan that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and uses a compound having a characteristic structure as a compound for an electron transport layer.

A light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode, wherein the interlayer includes an emission layer, and the emission layer includes a condensed cyclic compound. An electronic apparatus includes the light-emitting device. The condensed cyclic compound is represented by Formula 1, wherein the detailed description of Formula 1 is the same as described in the specification:

##STR00001##

An organic optoelectronic device comprises a first electrode, a first carrier transport layer, an active layer, a second carrier transport layer and a second electrode. The first electrode is a transparent electrode. The active layer includes a low band gap small molecule material which includes a structure of Formula I:

##STR00001##

Wherein, o, m, n, p, x and y are independently selected from any integer from 0 to 2. Ar.sup.0, Ar.sup.1 and A.sup.2 are electron-donating groups. A.sup.0 is a heteroatom-containg tricyclic structure with or without substituents, and. the heteroatom comprises at least one of S, N, Si, and Se. A.sup.1 is an electron withdrawing group with or without substituents, and the structure of the electron-withdrawing group comprises at least one of S, N, Si, Se, C═O, —CN, SO.sub.2. The organic optoelectronic device of the present invention has good external quantum efficiency and dark current performance.

An organic light emitting device, comprising an anode; a cathode; and an emissive layer between the anode and the cathode, wherein the emissive layer comprises a first material which is an organic semiconductor compound and a second material which is a different organic semiconductor compound that has a spin doublet ground state; and wherein a lowest spin singlet excitation energy of the first material and a lowest spin triplet excitation energy of the first material are greater than a lowest spin doublet excitation energy of the second material; a method of fabricating an organic light emitting device, comprising: forming an emissive layer between an anode and a cathode, wherein the emissive layer comprises a first material which is an organic semiconductor compound and a second material which is a different organic semiconductor compound that has a spin doublet ground state; and wherein a lowest spin singlet excitation energy of the first material and a lowest spin triplet excitation energy of the first material are greater than a lowest spin doublet excitation energy of the second material; and a method of operating the device by applying a voltage across the device, such that spin singlet excited states and spin triplet excited states are formed for the first material, wherein energy is transferred from spin singlet excited states in the first material and spin triplet excited states in the first material to form spin doublet excited states in the second material, wherein the second material emits fluorescent light when transitioning from a spin doublet excited state to a ground state.

Provided are a compound capable of improving the luminous efficiency, stability and lifespan of an organic electronic device employing the same, an organic electronic element employing the same, and an electronic device thereof.