Abstract: The present invention provides a novel binaphthyl compound and an organic light emitting element having a good light emitting efficiency and a high durability at a low driving voltage.

Abstract: An oligofluorene compound is represented by the General Formula (1) below wherein in Formula (1) P1 represents a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 20 carbon atoms; P2 represents a hydrogen atom, a halogen atom, a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted 2-naphthyl group; R1 and R2 each represent a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 20 carbon atoms; and n represents integer of 2 to 4.

Abstract: Provided is an organic light-emitting device that shows high luminous efficiency even when driven at a high luminance. More specifically, provided is an organic light-emitting device, including: an anode (transparent electrode layer) and a cathode (metal electrode layer); and an organic compound layer being interposed between the anode and the cathode, and including an emission layer, in which: the emission layer has a host, a first dopant, and a second dopant; the host includes an aromatic hydrocarbon compound; the first dopant includes a phosphorescent iridium complex; and the second dopant includes a compound having two triarylamine structures.

Abstract: A light-emitting device is provided which uses an organic compound to emit light with high luminance and extremely high efficiency. The organic compound is composed of a metal complex having monovalent bidentate ligands. The light-emitting device includes a pair of electrodes which are an anode and a cathode, and plural organic compound layers interposed between the electrodes, in which at least one layer of the organic compound layers contains a metal complex represented by the following structural formula. The light-emitting device is an organic electroluminescent device using the light-emitting device in which the layer including the organic compound is a light-emitting layer.

Abstract: Provided is a novel fluorene compound, which is represented by the following general formula (1):

Abstract: An organic light-emitting device includes an anode, a cathode, and an organic compound layer interposed between the anode and the cathode. The organic compound layer contains a pyrene derivative.

Abstract: Provided is a novel fluorene compound, which is represented by the following general formula (1):

Abstract: The present invention provides a novel binaphthyl compound and an organic light emitting element having a good light emitting efficiency and a high durability at a low driving voltage.

Abstract: A fluorene compound and an organic light-emitting element including the fluorene compound are provided. The fluorene compound is represented by the following general formula [1], and the fluorene compound is a material for an organic light-emitting element. A steric hindrance group is introduced directly on a fluorene ring in the fluorene compound.

Abstract: The present invention provides a novel binaphthyl compound and an organic light emitting element having a good light emitting efficiency and a high durability at a low driving voltage.

Abstract: Provided is an organic light-emitting device that shows high luminous efficiency even when driven at a high luminance. More specifically, provided is an organic light-emitting device, including: an anode (transparent electrode layer) and a cathode (metal electrode layer); and an organic compound layer being interposed between the anode and the cathode, and including an emission layer, in which: the emission layer has a host, a first dopant, and a second dopant; the host includes an aromatic hydrocarbon compound; the first dopant includes a phosphorescent iridium complex; and the second dopant includes a compound having two triarylamine structures.

Abstract: The present invention provides an organic EL device utilizing phosphorescence which can be driven at a low voltage, which realizes high luminance and high efficiency, and which has a long lifetime. The organic EL device of the present invention includes an organic light-emitting layer composed of at least a host material and a dopant, wherein the dopant is a phosphorescent compound containing a halogen atom, and the host material is a linear aromatic compound having no aromatic substituent at a side thereof.

Abstract: Provided is a novel fluorene compound, which is represented by the following general formula (1):

Abstract: An oligofluorene compound is represented by the General Formula (1) below wherein in Formula (1) P1 represents a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 20 carbon atoms; P2 represents a hydrogen atom, a halogen atom, a substituted or unsubstituted linear or branched alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted 2-naphthyl group; R1 and R2 each represent a hydrogen atom, a halogen atom, or a linear or branched alkyl group having 1 to 20 carbon atoms; and n represents integer of 2 to 4.

Abstract: The present invention provides a novel binaphthyl compound and an organic light emitting element having a good light emitting efficiency and a high durability at a low driving voltage.

Abstract: An organometallic complex and an organic light-emitting element containing the complex which has a very high efficiency, a high luminance, and durability. The organic light-emitting element has an anode, a cathode, and a layer including an organic compound sandwiched between the anode and cathode. The layer containing the organic compound includes at least one organometallic complex represented by General Formula [I] below.

Abstract: A fluorene compound and an organic light-emitting element including the fluorene compound are provided. The fluorene compound is represented by the following general formula [1], and the fluorene compound is a material for an organic light-emitting element. A steric hindrance group is introduced directly on a fluorene ring in the fluorene compound.

Abstract: There are provided a novel carbazole compound and an organic light-emitting device having an optical output with extremely high efficiency and luminance and having extremely high durability. Specifically, there are provided a novel carbazole compound represented by the general formula (1): wherein Ar represents a substituted or unsubstituted bipyridine group, a substituted or unsubstituted terpyridine group, or a substituted or unsubstituted 4,5-diazafluorene group and is bonded to any of the eight available carbon atoms on the carbazole skeleton, and an organic light-emitting device using the carbazole compound.

Abstract: A light-emitting device is provided which uses an organic compound to emit light with high luminance and extremely high efficiency. The organic compound is composed of a metal complex having monovalent bidentate ligands. The light-emitting device includes a pair of electrodes which are an anode and a cathode, and plural organic compound layers interposed between the electrodes, in which at least one layer of the organic compound layers contains a metal complex represented by the following structural formula. The light-emitting device is an organic electroluminescent device using the light-emitting device in which the layer including the organic compound is a light-emitting layer.

Abstract: An organic electroluminescent device includes an anode, a cathode, a luminescent layer disposed between the anode and the cathode, and a hole-transporting layer disposed between the anode and the cathode. The luminescent layer includes a first sublayer made of a first metal complex and a second sublayer made of a second metal complex. The second sublayer is disposed further from the hole-transporting layer than the first sublayer.