Abstract: A compound of formula (7) is provided wherein L4 is a linking group selected from the group consisting of: provided that an asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, R6 to R13 are independently a hydrogen atom, or a phenyl group, Ar17 is an unsubstituted phenylphenyl group, and Ar18 is a phenylphenyl group which may be substituted by a phenyl group or a naphthyl group, or a phenyl group which may be substituted by a naphthyl group.

Abstract: The present disclosure relates to an organic compound having the following structure of Chemical Formula 1, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound includes a triazine moiety of an electron acceptor and a fused hetero aromatic moiety of an electron donor separated from the triazine moiety. The organic compound includes the electron acceptor moiety and the electron donor moiety in a single molecule, thus charges can be moved in the molecule. Also, since the organic compound includes the rigid fused hetero aromatic ring, three dimensional conformation of the organic compound is limited, and therefore the compound may have excellent luminous efficiency and color purity.

Abstract: The present disclosure relates to an organic compound having the following structure of Chemical Formula 1, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound includes a triazine moiety of an electron acceptor and a fused hetero aromatic moiety of an electron donor separated from the triazine moiety. The organic compound includes the electron acceptor moiety and the electron donor moiety in a single molecule, thus charges can be moved in the molecule. Also, since the organic compound includes the rigid fused hetero aromatic ring, three dimensional conformation of the organic compound is limited, and therefore the compound may have excellent luminous efficiency and color purity.

Abstract: The present disclosure relates to compounds capable of emitting delayed fluorescence and uses of these compounds in organic light-emitting diodes.

Abstract: An electro-optic element includes a first substrate defining first and second surfaces and a second substrate defining third and fourth surfaces. A first electrically conductive layer is disposed on the second surface and a second electrically conductive layer is disposed on the third surface. An electrochromic medium is disposed in a cavity between the first and second substrates, the electrochromic medium including an anodic component and a cathodic component. At least the anodic component is configured to reversibly attenuate transmittance of light having a wavelength within a predetermined wavelength range when in an electrochemically activated state. The anodic component includes a substituted ketal phenazine compound.

Abstract: According to the present invention, there is provided an organic electroluminescent device which has an anode, a hole transport layer, a luminous layer, an electron transport layer, and a cathode arranged in order of description. The device is characterized in that: the hole transport layer includes a specific arylamine compound, and that the luminous layer includes a specific indenoindole derivative or a specific carbazole derivative. The organic EL device of the present invention has improved efficiency of hole transport from the hole transport layer to the luminous layer and also improved efficiency of electron transport from the electron transport layer to the luminous layer, in comparison to conventional organic EL devices.

Abstract: The present specification relates to a double spiro structure compound, and an organic light emitting device comprising the same.

Abstract: To provide a novel organometallic complex, and light emitting elements, light emitting devices, and electronic devices which include the organometallic complex. In addition, to provide a composition in which the organometallic complex is dissolved and to provide a method for manufacturing light emitting elements using the composition. An organometallic complex has high solubility in a solvent. In the organometallic complex, the ligand including a pyrazine skeleton is bound to an atom belonging to Group 9 (Co, Rh, or Ir) or an atom belonging to Group 10 (Ni, Pd, or Pt). In addition, the light emission efficiency is high. Therefore, the organometallic complex is preferably used for manufacturing a light emitting element.

Abstract: A condensed cyclic compound and an organic light-emitting device including the same, the condensed cyclic compound being represented by Formula 1 below:

Abstract: The invention provides a light emitting layer host compound and an electron-blocking compound that have high excited triplet levels, and can completely confine the triplet excitons of phosphorescent material, for use as the material of a high-efficient organic electroluminescent device. The invention also provides a high-efficient, high-luminance organic electroluminescent device with the use of the compounds. The compound of the general formula (1) below has a triphenylsilyl group and a triarylamine structure, and the organic electroluminescent device includes a pair of electrodes and at least one organic layer interposed between the pair of electrodes, wherein the compound of the general formula (1) having a triphenylsilyl group and a triarylamine structure is used as constituent material of the at least one organic layer.

Abstract: An organic light-emitting device includes an amine-based compound represented by Formula 1 as a dopant, and an anthracene-based compound represented by Formula 2 as a host: Organic light-emitting devices including the amine-based compound of Formula 1 and the anthracene-based compound of Formula 2 may have an improved efficiency, a low driving voltage, and improved lifetime characteristics.

Abstract: The present invention relates to an organic light emitting device, and comprises a first cathode, a second cathode, and an anode provided between the first cathode and the second cathode, in which a first light emitting unit is provided between the first cathode and the anode, a second light emitting unit is provided between the second cathode and the anode, and the first light emitting unit and the second emitting unit are connected in parallel with each other, the first light emitting unit comprises a first light emitting layer, and an organic material layer comprising the compound represented by Formula 1 is provided between the first light emitting layer and the anode, and the second light emitting unit comprises a second light emitting layer, and an organic material layer comprising the compound represented by Formula 1 is provided between the second light emitting layer and the anode.

Abstract: A condensed cyclic compound represented by Formula 1: wherein in Formula 1, Groups X1 to X3, L11, L12, R11, and R12, and variables a11, a12, b11, b12, c11, and c12 are described in the specification.

Abstract: An illumination system comprising a radiation source and a monolithic ceramic luminescence converter comprising a composite material of at least one luminescent compound, and at least one non-luminescent compound, wherein the material of the non-luminescent compound comprises silicon and nitrogen, is advantageously used, when the luminescent compound comprises an rare-earth metal-activated host compound also comprising silicon and nitrogen. Shared chemical characteristics of the luminescent compound and the non-luminescent material improve phase assemblage, thermal and optical behavior. The invention relates also to a composite monolithic ceramic luminescence converter.

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: The present invention discloses a novel heterocyclic compound of Formula (1) and an organic electroluminescent device using the same, in which variables are as described herein. The heterocyclic compound of Formula (1) is present in the emitting layer as a light emitting host in combination with a dopant and another host, in the organic electroluminescent device and high luminous efficiency and low driving voltage are achieved.

Abstract: The present specification provides a hetero-cyclic compound and an organic light emitting device including the hetero-cyclic compound.

Abstract: The present invention discloses a compound represented by the following Formula I, and a luminescent material and an organic light emitting device using the same. Said compound has a characteristic of thermally activated delayed fluorescence, and can be used in luminescent materials and in organic light emitting devices.

Abstract: A compound represented by the following formula (1): wherein in the formula (1), Ar1 and Ar2 are independently a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a substituted or unsubstituted alkyl group; X1 to X4 and X13 to X16 are independently CR1, CH or N; one of X5 to X8 is a carbon atom bonding to one of X9 to X12, and at least one of X5 to X8 that is adjacent to the carbon atom bonding to one of X9 to X12 is CR2; one of X9 to X12 is a carbon atom bonding to one of X5 to X8, and X9 to X12 that is adjacent to the carbon atom bonding to one of X5 to X8 is CH or N; and the remaining X5 to X8 and the remaining X9 to X12 are CR1, CH or N.

Abstract: A light-emitting element with low drive voltage, a light-emitting element with high current efficiency, and/or a light-emitting element with a long lifetime are/is provided. Specifically, a light-emitting element with low drive voltage, a light-emitting element with high current efficiency, and/or a light-emitting element with a long lifetime are/is provided by the use of an organic compound with a dibenzo[f,h]quinoxaline skeleton in a light-emitting layer.