The present invention provides an organic thin film that imparts an excellent electron injection property and an excellent electron transport property when it is used as an electron injection layer of an organic EL device, a coating composition suitable for producing the organic thin film, and an organic EL device material for the organic thin film and the coating composition. The present invention provides an organic thin film, which is a single film containing a first material which is a compound having a structure of the following formula (1) and a second material which transports electrons or a laminate film including a film containing the first material and a film containing the second material,

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wherein X.sup.1 and X.sup.2 are the same as or different from each other and are each a nitrogen atom optionally having a substituent group, an oxygen atom optionally having a substituent group, a sulfur atom optionally having a substituent group, or a divalent linking group optionally having a substituent group; L is a direct bond or a linking group having a valence of p; n is a number of 0 or 1; p is a number of 1 to 4; q is a number of 0 or 1, with q being 0 when p is 1; R.sup.1 to R.sup.3 are the same as or different from each other and are each a monovalent substituent; and m.sup.1 to m.sup.3 are the same as or different from each other and are each a number of 0 to 3.

A light-emitting device includes: a first light-emitting element including a first light-emitting layer configured to emit light having a light-emitting central wavelength of a first wavelength, and a first electron transport layer layered with the first light-emitting layer; and a second light-emitting element including a second light-emitting layer configured to emit light having a light-emitting central wavelength of a second wavelength shorter than the first wavelength, and the second electron transport layer layered with the second light-emitting layer. Each of the first electron transport layer and the second electron transport layer includes a plurality of nanoparticles, and the second electron transport layer includes the plurality of nanoparticles having a smaller average particle size than the plurality of nanoparticles included in the first electron transport layer, and has a smaller thickness than the first electron transport layer.

The present invention relates to the compound represented by the general Formula (I): wherein X is selected from the group consisting of O, S and Se; R.sup.1 and R.sup.2 are independently selected from the group consisting of C.sub.1 to C.sub.12 alkyl, C.sub.6 to C.sub.20 aryl and C.sub.5 to C.sub.20 heteroaryl, wherein the respective C.sub.1 to C.sub.12 alkyl may optionally be substituted with C.sub.6-C.sub.20 aryl; L represents a single bond or is selected from the group consisting of C.sub.6 to C.sub.18 arylene or C.sub.2 to C.sub.20 heteroarylene; wherein the rings B, C and D may each be unsubstituted or substituted and B and C are anellated aromatic 6-membered rings; R.sup.3 and R.sup.4 are independently selected from the group consisting of unsubstituted or substituted C.sub.1 to C.sub.12 alkyl, unsubstituted or substituted C.sub.1 to C.sub.12 fluorinated alkyl, unsubstituted or substituted C.sub.6 to C.sub.20 aryl and unsubstituted or substituted C.sub.5 to C.sub.20 heteroaryl; wherein the substituents, if present in B, C, D, R.sup.3 and R.sup.4, are independently selected from the group consisting of C.sub.1-C.sub.20 linear alkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.1-C.sub.20 linear alkoxy, C.sub.3-C.sub.20 branched alkoxy, linear fluorinated C.sub.1-C.sub.12 alkyl, linear fluorinated C.sub.1-C.sub.12 alkoxy, C.sub.3-C.sub.12 branched fluorinated cyclic alkyl, C.sub.3-C.sub.12 fluorinated cyclic alkyl, C.sub.3-C.sub.12 fluorinated cyclic alkoxy, CN, C.sub.6-C.sub.20 aryl, C.sub.2-C.sub.20 heteroaryl, OR, SR, (C═O)R, (C═O)NR2, SiR.sub.3, (S═O)R, (S═O).sub.2R, CR═CR.sub.2, Fluorine, NR.sub.2, NO.sub.2; wherein R is independently selected from C.sub.1-C.sub.20 linear alkyl, C.sub.1-C.sub.20 alkoxy, C.sub.1-C.sub.20 thioalkyl, C.sub.3-C.sub.20 branched alkyl, C.sub.3-C.sub.20 cyclic alkyl, C.sub.3-C.sub.20 branched alkoxy, C.sub.3-C.sub.20 cyclic alkoxy, C.sub.3-C.sub.20 branched thioalkyl, C.sub.3-C.sub.20 cyclic thioalkyl, C.sub.6-C.sub.20 aryl and C.sub.3-C.sub.20 heteroaryl; and R.sup.3 and R.sup.4 may or may not be connected with each other via a single bond, an organic semiconducting layer comprising the same, an organic electronic device comprising the organic semiconducting layer and a display device or a lighting device comprising the same. ##STR00001##

A nanomaterial includes a core and an outer shell. The core includes ZnO nanoparticles and a metal element doped in the ZnO nanoparticles. The outer shell includes a metal oxide.

An organic light emitting display device is discussed, which includes an anode on a substrate, a first hole transfer layer on the anode, a first emission layer on the first hole transfer layer, a first electron transfer layer on the first emission layer, an N-type charge generation layer on the first electron transfer layer, a second hole transfer layer on the N-type charge generation layer, a first emission control layer on the second hole transfer layer, an absolute value of a highest occupied molecular orbital (HOMO) energy level of the first emission control layer being greater than an absolute value of a HOMO energy level of the second hole transfer layer, a second emission layer on the first emission control layer, a second electron transfer layer on the second emission layer and a cathode on the second electron transfer layer.

The present invention relates to a compound having the Formula (I) an intermediate of the compound, a process for preparing the compound, an organic semiconducting material comprising the compound and an organic electronic device comprising the same. The invention further relates to a display device or a lighting device comprising the organic electronic device.

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A light emitting device and a light emitting display device that are capable of improving efficiency, driving voltage, and lifespan by varying the configuration of a layer adjacent to a blue light emitting layer in a blue fluorescent stack contacting a cathode are disclosed. The light emitting device includes stacks between an anode and a cathode, wherein an n.sup.th stack contacting the cathode is a first blue stack that includes a first hole transport layer, a first electron-blocking layer, a first blue light emitting layer containing a boron-based dopant having an emission peak of 430 nm to 480 nm, a first electron transport layer contacting the first blue light emitting layer, and an electron injection layer having two sides contacting the first electron transport layer and the cathode, respectively, wherein the first electron transport layer contains a mixture of a first material and a second material.

Disclosed is a light emitting device that is capable of reducing lateral leakage current and a driving voltage by improving a structure for connecting a plurality of stacks to one another in a structure using the plurality of stacks, and a light emitting display device including the same. The light emitting device includes a first electrode and a second electrode facing each other, a plurality of stacks provided between the first electrode and the second electrode, and a charge generation layer including an electron generation layer and a hole generation layer stacked between the stacks, wherein the electron generation layer contains a first host of Formula 1 and a metal dopant, and the hole generation layer contains a second host and an organic dopant.

A light-emitting device includes an electron transport region including a first electron transport layer and a second electron transport layer. The first electron transport layer includes a first compound, the second electron transport layer includes a second compound, the first compound includes a pyrimidine group, the second compound includes a triazine group, and an absolute value of a lowest unoccupied molecular orbital (LUMO) energy of the first compound (E.sub.LUMO_E1) is less than an absolute value of a LUMO energy of the second compound (E.sub.LUMO_E2). An electronic apparatus including the light-emitting device.

Disclosed is an organometallic compound represented by a following Chemical Formula I, wherein the compound is a metal complex including a central coordination metal and a main ligand binding thereto, wherein the main ligand has a structure in which a fused ring is further introduced into 2-phenylquinoline. When the organometallic compound is used as dopant of a light-emitting layer of an organic electroluminescent device, rigidity is imparted to the organometallic compound molecule such that a full width at half maximum (FWHM) is narrow and thus color purity is improved. Further, a non-luminescent recombination process is reduced such that luminous efficiency and lifespan of the organic electroluminescent device are improved. Chemical Formula I is shown below:

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