Abstract: Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a n-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic, thin film layers contains the material for an organic electroluminescence device.

Abstract: A condensed cyclic compound represented by Formula 1: Ar1-(L1)a1-Ar2??Formula 1 wherein, in Formula 1, a1, Ar1, Ar2, and L1 are the same as described in the specification.

Abstract: A material for organic electroluminescence device having a specific structure, in which an aromatic ring of a dibenzofuran skeleton, a carbazole skeleton, or a dibenzothiophene skeleton has a nitrogen atom as a heteroatom, and an organic electroluminescence device including an organic thin film layer which includes one or more layers between a cathode and an anode. The organic thin film layer includes a light emitting layer which includes a phosphorescent emitting material. At least one layer of the organic thin film layer includes the material for organic electroluminescence device. The organic EL device employing the material for organic EL device has a high external quantum efficiency even when driving the device at low voltage and also has a long lifetime.

Abstract: Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a n-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

Abstract: A condensed cyclic compound represented by Formula 1: Ar1-(L1)a1-B-(L2)a2-Ar2??Formula 1 wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a ?-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

Abstract: An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer has an emission layer, wherein the emission layer includes a host and a thermally activated delayed fluorescent dopant, wherein the dopant includes a condensed cyclic compound represented by Formula 1, and wherein an amount of the dopant is smaller than that of the host: Ar1—Ar2??Formula 1 wherein Ar1 and Ar2 are the same as described in the specification.

Abstract: A condensed cyclic compound represented by Formula 1: Ar1-(L1)a1-Ar2??Formula 1 wherein, in Formula 1, Ar1, Ar2, L1, and a1 are the same as described in the specification.

Abstract: The present invention provides a material for an organic electroluminescence device having a specific structure in which a dibennzofuranyl group or a dibenzothiophenyl group is bonded at an N-position (9-position) of a carbazolyl group and an organic electroluminescence device which is provided with one or more organic thin film layers including a light emitting layer between a cathode and an anode and in which at least one layer of the organic thin film layers described above contains the material for an organic electroluminescence device according to the present invention.

Abstract: A compound represented by the following general formula is useful as a light emitting material. X represents an oxygen atom or a sulfur atom. R1 to R8 represent a hydrogen atom or a substituent, provided that at least one of R1 to R8 is a carbazolyl group, etc.

Abstract: Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a ?-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

Abstract: An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer includes an emission layer, the emission layer includes a host and a fluorescent dopant, the organic light-emitting device satisfies Equation 1, the host includes a compound represented by Formulae 1, 2, or 3, and the fluorescent dopant satisfies Equation 2, wherein Formulae 1-3 and Equations 1-2 are the same as described in the specification.

Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, and wherein the organic layer comprises a first compound represented by Formula 1 and a second compound having the lowest excited triplet energy level greater than 2.73 electron volts: wherein in Formula 1, R11 to R33 are the same as described in the specification.

Abstract: Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a ?-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

Abstract: An organic light-emitting device including a first electrode, a second electrode facing the first electrode, and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer and satisfies Equations 1 and 2, ET1(HOST)?ET1(AD)>0.05 eV??Equation 1 ES1(FD)?ES1(AD)<0 eV,??Equation 2 wherein in Equation 1, ET1(HOST) is a triplet energy (eV) of the host, and ET1(AD) is a triplet energy (eV) of the auxiliary dopant, and wherein in Equation 2, ES1(FD) is a singlet energy (eV) of the fluorescent dopant, and ES1(AD) is a singlet energy (eV) of the auxiliary dopant, wherein the emission layer comprises a host, an auxiliary dopant, and a fluorescent dopant, and wherein the auxiliary dopant is selected from compounds represented by Formula 1: wherein in Formula 1, Ar1 and R11 to R16 are the same as described in the specification.

Abstract: A specific material for organic electroluminescence device having m-phenylene skeleton in its molecule realizes a highly heat-resistant and long lifetime organic electroluminescence device capable of driving at low voltage with high efficiency.

Abstract: A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), from 0 to 1 of R3 to R5 represents a cyano group, from 1 to 5 of R1 to R5 represent a group represented by the general formula (2) etc., and the balance of R1 to R5 represent a hydrogen atom or a substituent other than above. R11 to R20 represent a hydrogen atom or a substituent, L12 represents a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.

Abstract: A charge-transporting material including Structural Unit (1) represented by one of Formulae 1 and 2; and Structural Unit (2) represented by one of Formulae 3 and 4: wherein, in Formulae 1 to 4, groups and variables are the same as described in the specification.

Abstract: A nitrogen-containing aromatic heterocyclic derivative represented by the following formula, wherein X1 to X3 are a single bond, CRaRb, NRc, an oxygen atom or a sulfur atom, and when all of X1 to X3 is a single bond, at least one of Ara, Arb and Arc is an aryl group having 6 to 20 ring carbon atoms substituted with a heteroaryl group, an aryloxy group or a heteroaryloxy group, or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.

Abstract: An anthracene derivative represented by the following formula (1): In the formula (1), Z is a structure represented by the following formula (2).