Abstract: An organic electroluminescence element comprising at least an emission layer sandwiched between an anode and a cathode, wherein the emission layer comprises a metal complex having a partial structure represented by Formula (1):

Abstract: A photoluminescent or electroluminescent system and method of making a non-luminescent nanostructured material into such a luminescent system is presented. The method of preparing the luminescent system, generally, comprises the steps of modifying the surface of a nanostructured material to create isolated regions to act as luminescent centers and to create a charge imbalance on the surface; applying more than one polar molecule to the charged surface of the nanostructured material; and orienting the polar molecules to compensate for the charge imbalance on the surface of the nanostructured material. The compensation of the surface charge imbalance by the polar molecules allows the isolated regions to exhibit luminescence.

Abstract: Disclosed is an organic electroluminescent (EL) device having high emission luminance and high emission efficiency. Particularly disclosed are a blue-light emitting organic EL device, which is high in emission luminance, color purity, emission efficiency and durability, a display and an illuminating device each employing the organic EL device. The organic El device is characterized in that it comprises a light emission layer containing two or more kinds of host compounds and at least one dopant, wherein at least one of the two or more kinds of host compounds has an excited triplet energy of not less than 2.7 eV, and the dopant is a phosphorescent compound.

Abstract: Provided are a heterocyclic compound which emits blue light and is represented by General Formula (G1) below, and a light-emitting element, a light-emitting device, an electronic device and a lighting device which are formed using the heterocyclic compound represented by General Formula (G1) below. The use of the heterocyclic compound represented by General Formula (G1) makes it possible to provide a light-emitting element which has high emission efficiency, and also a light-emitting device, an electronic device and a lighting device which have reduced power consumption.

Abstract: The present invention provides a benzo[b]chrysene compound represented by general formula [1] below and an organic light-emitting element including the compound. In the general formula [1], Ar represents a substituted or unsubstituted aromatic hydrocarbon group, and R1 to R4 are each independently selected from the group consisting of a hydrogen atom, substituted or unsubstituted alkyl groups, and substituted or unsubstituted aromatic hydrocarbon groups.

Abstract: Provided is an organic electroluminescent device including: a substrate (11, 101); a first electrode (12, 102) formed on the substrate (11, 101) and including a pixel region; a partition wall (23, 203) formed on the substrate (11, 101), partitioning the first electrode (12, 102), and including a surface with a recessed and projected form; a luminescent medium layer (19, 109) formed on the pixel region and the partition wall (23, 203), a film thickness of the partition wall (23, 203) being uneven according to the recessed and projected form; and a second electrode (17, 107) formed on the luminescent medium layer (19, 109).

Abstract: A heterocyclic compound, an organic light-emitting diode, and a flat display device, the heterocyclic compound being represented by Formula 1, below:

Abstract: Disclosed herein are compounds represented by Formula 1, wherein R1, Ar1, X, Ar2, Ar3, and Het are described herein. Compositions and light-emitting devices related thereto are also disclosed.

Abstract: To provide a novel organic compound having a bipolar property. To reduce power consumption of a light-emitting element, a light-emitting device, and an electronic device. The organic compound has a fluorene skeleton and a structure in which an electron-accepting unit and a hole-accepting unit are bonded through carbon at the 9-position of the fluorene skeleton. The organic compound has a bipolar property and a large band gap. The use of the organic compound makes it possible to reduce power consumption of a light-emitting element, a light-emitting device, and an electronic device.

Abstract: An organic electroluminescence element comprising: an anode; a first emitting layer comprising at least a first host material and a first dopant; a second emitting layer comprising at least a second host material and a second dopant; and a cathode in the order mentioned: wherein the energy gap Egh1 of the first host material, the energy gap Egd1 of the first dopant, the energy gap Egh2 of the second host material, and the energy gap Egd2 of the second dopant satisfy the following formulas; and the luminescent intensity I1 at the maximum luminescent wavelength of an emission spectrum derived from the first emitting layer, and the luminescent intensity I2 at the maximum luminescent wavelength of an emission spectrum derived from the second emitting layer satisfy the following formula: Egh1>Egd1 Egh2>Egd2 Egd1>Egd2 I1>3.5×I2.

Abstract: Provided is an organic light emitting device having a long continuous driving lifetime. The organic light emitting device includes an anode, a cathode, and an organic compound layer which is sandwiched between the anode and the cathode, in which: one of the anode and the cathode is transparent or semi-transparent; and the organic compound layer contains at least one kind of triazine compound represented by the following general formula (1): ArT)n??(1) where n represents an integer of 1 or 2; Ar represents a fused polycyclic aromatic group which has three or more rings and may have a substituent; and T represents a triazine group represented by the following general formula (2): where R1 and R2 each represent a phenyl group or a phenyl group substituted by an alkyl group and may be identical to or different from each other.

Abstract: A light-emitting element material including an ionic iridium complex in which a 4,4?-bipyrimidine structure is coordinated to iridium is provided. Alternatively, a light-emitting element material including an ionic iridium complex represented by the following structural formula (1) is provided. In addition, a light-emitting element including the light-emitting element material is provided.

Abstract: An organic electroluminescent device having high luminance and long-term stability under high temperature, high humidity conditions. This organic electroluminescent device is suppressed in voltage increase and generation of dark spots when driven at a constant current. Additionally, a display and an illuminating device can be made using the organic electroluminescent device. The organic electroluminescent device is characterized in that at least one of organic layers constituting the device is a light-emitting layer containing a host compound and a phosphorescent compound of the general formula: and the at least one organic layer has a film surface density of 1.10-1.25 g/cm3.

Abstract: A quinoxaline derivative represented by a formula (1) is provided. In the formula (1), R9 and R10 and R11 and R12 are bonded to each other to form an aromatic ring, and Ar1 to Ar4 each independently represents an aryl group or a heterocyclic group.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which can achieve high efficiency and long lifetime even when driven at low voltage. The organic El device comprises at least a light-emitting layer and an electron-transporting layer between an anode and a cathode facing each other. The electron-transporting layer consists of two layers, namely, a first electron-transporting layer and a second electron-transporting layer and the first electron-transporting layer and the second electron-transporting layer are arranged sequentially in this order from the light-emitting layer side to the cathode side. The first electron-transporting layer contains an indole derivative in which the ring nitrogen atom is substituted with an aromatic group and an aromatic ring is fused to the indole ring.

Abstract: A green phosphorescent iridium complex represented by Formula (I) is provided. In Formula (I), R1, R2 and R3 are, independently, hydrogen, halogen, substituted or non-substituted C1-6 alkyl, C1-6 alkoxy, cycloalkyl, substituted or non-substituted aryl, amino or heteroaryl, and L is a heterocyclic ring containing N—N or N—O ligand. The invention also provides a method for fabricating the green phosphorescent iridium complex and an organic light-emitting diode including the green phosphorescent iridium complex.

Abstract: An organic electroluminescence element comprising: an anode layer, a cathode layer, and an organic luminescence layer therebetween, the organic luminescence layer having a carbazole derivative with a glass-transition temperature of 110° C. or higher, and a phosphorescent dopant. This structure makes it possible to provide an organic electroluminescence element which can make use of the triplet exciton state of the carbazole derivative even at room temperature and which has a practical life and superior heat-resistance.

Abstract: An electroluminescent element which includes host materials and guest materials in a part of an electroluminescent layer. Device characteristics (luminous efficiency, luminous characteristics, or the like) of an electroluminescent element are improved by using host materials and guest materials which have a common skeleton (represented by the following general formula) for an electroluminescent layer interposed between a pair of electrodes in the electroluminescent element. In the common skeleton, X1 to X3, each of which may be the same or different, are individually a hydrogen atom, a halogen atom, a lower alkyl group, an alkoxy group, an acyl group, a nitro group, a cyano group, an amino group, a dialkylamino group, a diarylamino group, a vinyl group which may have a substituent, an aryl group which may have a substituent, or a heterocyclic group which may have a substituent.

Abstract: The present invention relates to compounds of the formula (1) and to the use thereof in organic electroluminescent devices. The compounds of the formula (1) are used as host material or dopant in the emitting layer and/or as hole-transport material and/or as electron-transport material.

Abstract: Novel aryl silicon and aryl germanium host materials are described. These compounds improve OLED device performance when used as hosts in the emissive layer of the OLED.

Abstract: Neutral ruthenium(II) complexes having at least one bidentate carbene coordinated to the ruthenium through a ruthenium-carbene bond are provided. Also provided are organic light emitting devices comprising the ruthenium(II) carbene complexes.

Abstract: The present invention relates to a compound having a substituted anthracene ring structure and a pyridoindole ring structure, which is represented by the following general formula (1) or the following general formula (2); and an organic electroluminescent device having a pair of electrodes and at least one organic layer interposed therebetween, in which the compound having a substituted anthracene ring structure and a pyridoindole ring structure, which is represented by the following general formula (1) or the following general formula (2), is used as a constituent material of the aforementioned at least one organic layer.

Abstract: An indenofluorenedione derivative having a specific structure, which is useful as a material for organic electroluminescence devices because the derivative is excellent in heat resistance and can be vapor-deposited on a substrate at moderate temperature. An organic electroluminescence device including an anode, a cathode, and an organic thin layer between the anode and the cathode, which contains the material for organic electroluminescence devices in the organic thin layer, is driven at a low driving voltage and has a long lifetime.

Abstract: A surface modified electrode, included in an electronic device comprises an electrode layer, and a functional organic material. The functional organic material comprises an amine-substituted polymeric material which is on the surface of and in contact with the electrode layer. Such surface modified electrodes are useful for producing electronic devices.

Abstract: A material for organic electroluminescence devices comprising a compound in which a heterocyclic group having nitrogen is bonded to an arylcarbazolyl group or a carbazolylalkylene group and an organic electroluminescence device comprising an anode, a cathode and an organic thin film layer comprising at least one layer and disposed between the anode and the cathode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices described above. The material can provide an organic electroluminescence device emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.

Abstract: Organic compounds and organic electroluminescent devices employing the same are provided.

Abstract: An anthracene derivative represented by the general formula (G1) is provided. The anthracene derivative represented by the general formula (G1) is a novel anthracene derivative having a wide band gap. Further, the anthracene derivative has a large energy gap and can be very suitably used as a material for a light-emitting element which exhibits blue light emission.

Abstract: Disclosed is a fullerene derivative having a formula of F-Cy, wherein F is an open-cage fullerene, and Cy is a chalcogenyl group. The fullerene derivative can be applied to hydrogen storage material and an optoelectronic device such as an organic light emitting diode (OLED), a solar cell, or an organic thin film transistor (TFT).

Abstract: Disclosed is a novel benzoxazole derivative which has high excitation energy, particularly high triplet excitation energy, and is a bipolar substance. A benzoxazole derivative represented by the following General Formula (G1) is provided. In the formula, R1 and R2 independently represent a hydrogen atom, an alkyl group with 1 to 4 carbon atoms, or a substituted or unsubstituted aryl group with 6 to 13 carbon atoms, substituents of the substituted aryl group may be bonded to form a ring which may form a spiro ring structure, R11 to R14 independently represent a hydrogen atom, a halogen, an alkyl group with 1 to 4 carbon atoms, or an unsubstituted aryl group with 6 to 10 carbon atoms, a bond formed between any two of ?, ?, and ? forms a carbazole skeleton, and n is 0 to 3.

Abstract: Disclosed is a salt of an organometallic complex cation and an organometallic complex anion, wherein the cation as well as the anion consists of a central metal atom M of atomic weight greater than 40 associated to 2 or more ligands, at least one ligand comprising a cyclic organic moiety with a carbon atom bonding to M, and at least one ligand comprising a cyclic organic moiety with a nitrogen atom bonding to M. The novel salts may be used as conductive and/or light emitting components in electronic devices. Color emission may be chosen by selecting anion(s) and cation(s) of suitable emission characteristics.

Abstract: A phosphorescent metal complex is provided, which comprises a metallic central atom M and at least one ligand coordinated by the metallic central atom M, wherein the one metallic central atom M and the ligand form a six-membered metallacyclic ring. Additionally specified are a radiation-emitting component comprising a metal complex, and a process for preparing the metal complex.

Abstract: Bridged cyclometalated carbene complexes, a process for preparing the bridged cyclometalated carbene complexes, the use of the bridged cyclometalated carbene complexes in organic light-emitting diodes, organic light-emitting diodes comprising at least one inventive bridged cyclometalated carbene complex, a light-emitting layer comprising at least one inventive bridged cyclometalated carbene complex, organic light-emitting diodes comprising at least one inventive light-emitting layer and devices which comprise at least one inventive organic light-emitting diode.

Abstract: An organic electroluminescent element containing an anode and a cathode having therebetween a light emitting layer, wherein the light emitting layer contains a guest compound having a substructure represented by the following Formula (A): wherein Ra represents alkyl, alkenyl, alkynyl, cycloalkyl, aromatic hydrocarbon, aromatic heterocyclic or heterocyclic, Rb and Rc represent hydrogen or a substituent, A1 represents a group of atoms which forms an aromatic hydrocarbon ring or an aromatic heterocycle, M represents Ir or Pt, and a host compound having the following Formula (1): wherein Ra1 represents alkyl, alkenyl, alkynyl, cycloalkyl or heterocyclic, R1, R2 and R5 each represent hydrogen or a substituent, and n1, n2 and n5 each represent 0 to 4.

Abstract: A dendrimer compound characterized by comprising a core represented by the following formula (1-1), (1-2), (1-3), or (1-4) and at least one kind of dendritic structure selected among dendritic structures represented by the following formulae (3) and (4).

Abstract: Organometallic compounds and organic electroluminescence devices and compositions employing the same are provided. The organic metal compound has a chemical structure represented by formula (I) or formula (II): wherein, R is an alkyl group, or cycloalkyl group, such as C1-12 alkyl group, or C4-12 cycloalkyl group.

Abstract: Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand as exemplified by Formula I, where X is NR, O, S, BR, or Se. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.

Abstract: According to one embodiment, an organic light-emitting diode includes an anode and a cathode arranged apart from each other, an emission layer, arranged between the anode and cathode, containing a host material of polyvinyl(2,7-difluorocarbazole), a blue-emitting phosphorescent material, and an electron transport material, and a hole transport layer of polyvinylcarbazole arranged adjacent to the emission layer on an anode side.

Abstract: The invention relates to a compound having a pyridoindole ring structure having a substituted pyridyl group of formula (1); and to an organic electroluminescent device comprising a pair of electrodes and at least one organic layer interposed between the electrodes, wherein at least one of the organic layer(s) contains the compound: wherein Ar represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group; R1 to R10 may be the same or different from one another and each independently represents a hydrogen atom, a fluorine atom, a cyano group, an alkyl group, or a substituted or unsubstituted aromatic hydrocarbon group; Z represents a 6-membered aromatic heterocyclic ring containing one nitrogen atom; and m and n each independently represents an integer of 1 to 3, provided that n is 1 when m is 2 or 3.

Abstract: A novel anthracene derivative with a large energy gap is provided. An anthracene derivative represented by General Formula (G1) below is provided. In the formula, Ar1 and Ar2 independently represent an aryl group with 6 to 13 carbon atoms in a ring, R1 and R2 independently represent any of hydrogen, an alkyl group with 1 to 4 carbon atoms, or an aryl group with 6 to 13 carbon atoms in a ring, and each of Ar1, Ar2, R1, and R2 may have a substituent and the two substituents may be bonded to each other to form a ring.

Abstract: An organic device, including an organic compound having charge-transporting ability (i.e., transporting holes and/or electrons) and/or including organic light emissive molecules capable of emitting at least one of fluorescent light or phosphorescent light, has a charge transfer complex-contained layer including a charge transfer complex formed upon contact of an organic hole-transporting compound and molybdenum trioxide via a manner of lamination or mixing thereof, so that the organic hole-transporting compound is in a state of radical cation (i.e., positively charged species) in the charge transfer complex-contained layer.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of high driving stability, and of a simple structure. The organic EL device is constituted of an anode, organic layers containing a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate and a phosphine oxide derivative represented by general formula (1) is contained in a phosphorescent light-emitting layer, an electron-transporting layer, a hole-blocking layer, or an exciton-blocking layer. In general formula (1), L1 is a direct bond or an aromatic group with a valence of 1-3 and Ar1 is an aromatic group. The two Ar1 groups linked to the same nitrogen atom may form a nitrogen heterocycle and may further form a fused ring together with the said nitrogen heterocycle.

Abstract: Disclosed herein are compositions comprising an electron transport compound, an emissive compound, and an organic solvent. The emissive compound comprises an organic indium complex attached to a nanoparticle core. These compositions are useful in fabricating light emitting devices and can be deposited on a substrate via a printing process.

Abstract: The present disclosure relates to electronic devices comprising at least one layer comprising novel cross-linkable polymers. The compounds can function as monomers, and copolymers can be formed from such monomers, such copolymers comprising, as polymerized units, a plurality of units of the compounds. The compositions are especially useful when incorporated into charge transport layers and light-emitting layers of a wide variety of electronic devices.

Abstract: An object is to provide a novel material having a bipolar property. Another object is to provide an oxadiazole derivative having a wide band gap. Another object is to reduce power consumption of a light-emitting element, a light-emitting device, and an electronic device. The present invention provides an oxadiazole derivative represented by General Formula (1). In the formula, Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, A represents a substituted or unsubstituted phenylene group, R11 to R15 and R21 to R25 are independently any of hydrogen, an alkyl group having 1 to 4 carbon atoms, an aryl group having 6 to 10 carbon atoms in a ring, and a substituted or unsubstituted 9H-carbazol-9-yl group.

Abstract: The resin composition of the present invention is a resin composition characterized by including (a) a polyimide, a polybenzoxazole, a polyimide precursor or a polybenzoxazole precursor, (b) 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, or 2,3-dihydroxynaphthalene, and (c) a thermal cross-linking agent having a specific structure. By the use of the resin composition of the present invention, it is possible to reduce the transmittance in the visible region of a cured film while maintaining the transmittance of a resin film before curing.

Abstract: A compound is represented by the following formula (I): wherein N represents a nitrogen atom; C represents a carbon atom; Pt represents a platinum atom; Z1, Z4, Z5, and Z8 represent a carbon atom or a nitrogen atom; Z2, Z3, Z6, and Z7 represent a carbon atom, a nitrogen atom, an oxygen atom or a sulfur atom; Z11 and Z16 represent a carbon atom or a nitrogen atom; Z12, Z13, Z14, Z15, Z17, Z18, Z19, and Z20 represent a carbon atom, a nitrogen atom, an oxygen atom, or a sulfur atom; Y1 and Y2 represent a single bond, an oxygen atom, a sulfur atom, a nitrogen atom; A11 represents a divalent linking group; B1 and B2 represent a single bond or a divalent linking group.

Abstract: Disclosed are an organic electroluminescent device (organic EL device) that is improved in luminous efficiency and fully assured of driving stability and has a simple structure and an organic metal complex suitable therefor. The organic metal complex is represented by the following general formula (I) wherein Ar1 denotes an aromatic hydrocarbon group or a heteroaromatic group and may have substituents, Ar2 and Ar3 respectively denote an aromatic hydrocarbon group or a heteroaromatic group and may have substituents, M denotes a trivalent metal, and L denotes an arylate ligand containing a hetero ring having at least one nitrogen atom capable of coordinating M. This organic metal complex, along with a phosphorescent dopant, is suitable for a material constituting the light-emitting layer of an organic EL device.

Abstract: Novel phosphorescent heteroleptic iridium complexes with phenylpyridine and dibenzo-containing ligands are provided. Alkyl substitution at specific positions on the ligands gives rise to compounds with improved OLED properties, including saturated green emission.

Abstract: An aromatic amine derivative with a special structure obtained by bonding a diphenylamino group having a substituent to a substituted pyrene structure; and a process for producing the aromatic amine derivative. An organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrodes consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the aromatic amine derivative singly or as its mixture component. An organic electroluminescence device having a prolonged lifetime and emits blue light with an enhanced efficiency of light emission and an aromatic amine derivative realizing the device are provided.

Abstract: Disclosed is an organic electroluminescent device (organic EL device) that is improved in the luminous efficiency, fully secured of the driving stability, and of a simple structure. The organic EL device comprises a light-emitting layer between an anode and a cathode piled one upon another on a substrate and the said light-emitting layer comprises (A) a phosphorescent dopant whose emission peak wavelength is longer than 600 nm and (B) a host material. The host material contains at least two kinds of compounds selected from two or more kinds of derivatives included in (b1) N-substituted indolocarbazole derivatives, (b2) derivatives of 8-hydroxyquinoline aluminum complex, and (b3) bisindolocarbazole derivatives.