Abstract: A luminescent device having a high luminescence efficiency and a high luminance is provided by using a rhenium coordination compounds the luminescent device comprising a Re complex compound provided between a pair of electrodes on a substrate, wherein the Re complex compound is expressed by the following general formula:

Abstract: A metal coordination compound having a basic structure represented by formula: MLmL′n (1), wherein M is a metal atom of Ir, Pt, Rh or Pd; L and L′ are mutually different bidentate ligands; m is 1, 2 or 3; wherein at least one bidentate ligand has a partial structure formed by condensation via an alkylene group having 2-10 carbon atoms, is provided. In an electroluminescence device composed of one or a plurality of organic films disposed between a cathode and an anode, at least one layer is a luminescence layer which is formed by incorporating luminescence molecules constituting the metal coordination compound having a structure of the formula (1) described above as a guest material in a host material thereby to provide an electroluminescence device producing luminescence at high efficiency and stably keeping a high luminance for a long period.

Abstract: An organic light emitting device having a high light emitting efficiency and a long light emission lifetime is provided that comprises a pair of electrodes provided on a substrate, and a light emitting layer comprising at least one layer of an organic substance provided between the electrodes, wherein the light emitting layer comprises a first organic substance and a second organic substance mainly concerning a light emission wavelength of the light emitting layer, and wherein the first organic substance comprises a fluorine-containing organic compound.

Abstract: A metal coordination compound having a binuclear molecular structure represented by the following formula (1): 1

Abstract: In order to improve the light emission efficiency and the light emission life time of an organic electroluminescent device, the invention provides a method for improving the dispersibility of a light emitting material in the light emitting layer. The light emitting device comprises electrodes consisting of an anode and a cathode provided on a substrate, and an organic light emitting layer between the electrodes, wherein the organic light emitting layer includes a light emitting material and a dopant for improving the dispersibility thereof. As the dopant, there are employed a light emitting compound and a non-light emitting compound or a current enhancing material. In case of employing the light emitting compound, the composition corresponds to a case of utilizing plural light emitting materials, and, in such case, the light emission wavelengths are preferably mutually closer.

Abstract: An electroluminescence device having a layer containing a specific metal coordination compound is provided.

Abstract: An electroluminescence device having a layer containing a specific metal coordination compound is provided.

Abstract: An electroluminescence device having a layer containing a specific metal coordination compound is provided.

Abstract: A luminescence device having a layer containing a metal coordination compound which has a partial structure MLm of formula (2) below and is preferably entirely represented by formula (3) below:

Abstract: In a luminescence device formed of one or plural layers of organic film between a cathode and an anode, at least one layer is a luminescence layer, and a luminescence molecule of a metal coordination compound having a basic structure represented by formula (1) below and having a substituent on at least one of cyclic groups A and B is incorporated as a guest in a host material at a concentration of at least 8 wt. %, which is higher than a concentration at which a luminescence molecule of a similar structure but having no substituent exhibits a maximum luminescence efficiency to form the luminescence layer. As a result, a high-efficiency luminescence device is provided, which is less liable to cause concentration extinction even when a luminescence molecule is contained at a high concentration relative to the host material in the luminescence layer.

Abstract: An organic EL device includes a luminescence layer containing, as a luminescent material allowing a high-luminescence and high-efficiency luminescence for a long period of time, a metal coordination compound represented by the following formula (1): LmML′n, wherein M denotes Ir, Pt, Ph or Pd; L denotes a bidentate ligand; L′ denotes a bidentate ligand different from L; m is an integer of 1, 2 or 3; and n is an integer of 0, 1 or 2 with the proviso that the sum of m and n is 2 or 3.

Abstract: A light emitting device is disclosed having a light emitting layer containing a porphyrin derivative compound each pyrrole group of which is characterized by having a straight-chain or branched side-chain alkyl group having 5 to 20 carbon atoms, and the central metal of which is Cr, Ni, Cu, Co, Ru, Rh, Pd, Ir, Pt or Au. The compound is light-emissive and especially has phosphorescent light emission properties and liquid crystal properties. Also disclosed is a display unit using the light emitting device.

Abstract: An organic electroluminescence device is made to show an improved carrier transporting ability and an improved carrier injecting property by doping a liquid crystal compound having a high degree of carrier mobility without generating any ionic current. The organic electroluminescence device comprises a carrier transport layer formed by doping a smectic liquid crystal compound having a hexagonal order structure with a Lewis acid compound, a light-emitting layer and a protection layer arranged between the carrier transport layer and the light-emitting layer and composed of an organic compound having a carrier transporting property of the same type as that of carrier transport layer and a carrier conducting property of the type different from that of the carrier transport layer.

Abstract: The present invention realizes measures for antireflection in various ways in an organic electroluminescent device, and provides a high performance organic electroluminescent device. The organic electroluminescent device includes an organic compound layer containing luminescent sections, the organic compound layer being placed between substantially transparent electrodes; and an insulating light absorption layer in contact with first electrodes, the light absorption layer being placed between the substrate and the first electrodes.

Abstract: A metal coordination compound suitable as an organic material for a luminescent device is represented by the following formula (1): 1

Abstract: A metal coordination compound suitable as an organic material for a luminescent device is represented by the following formula (1): 1

Abstract: An organic electroluminescence device is constituted by a pair of substrates each provided with an electrode, and an organic luminescence layer of an organic luminescence material and a liquid crystal layer of a liquid crystal material, respectively disposed between the substrates. The liquid crystal material has an isotropic phase transition temperature lower than a glass transition temperature of the organic luminescence material. The liquid crystal layer has been formed by disposing the liquid crystal material on the organic luminescence layer in an isotropic phase state at a temperature lower than the glass transition temperature of the organic luminescence material and cooling the liquid crystal material to a temperature lower than the isotropic phase transition temperature.

Abstract: A luminescence device is constituted by a substrate, a first electrode disposed on the substrate, at least one organic luminescence function layer disposed on the first electrode, a second electrode disposed on the above at least one organic luminescence function layer, and an oxygen absorbent disposed between the substrate and the second electrode or between the first and second electrodes. To the luminescence device, a voltage is applied between the first and second electrodes to cause phosphorescence from at last one layer constituting the above-mentioned at least one organic luminescence function layer preferably containing the oxygen absorbent. The oxygen absorbent may be formed in a layer disposed at a region other than pixel portions.

Abstract: A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween.

Abstract: A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween.