Abstract:
A triplet light emitting device which has high efficiency and improved stability and which can be fabricated by a simpler process is provided by simplifying the device structure and avoiding use of an unstable material. In a multilayer device structure using no hole blocking layer conventionally used in a triplet light emitting device, that is, a device structure in which on a substrate, there are formed an anode, a hole transporting layer constituted by a hole transporting material, an electron transporting and light emitting layer constituted by an electron transporting material and a dopant capable of triplet light emission, and a cathode, which are laminated in the stated order, the combination of the hole transporting material and the electron transporting material and the combination of the electron transporting material and the dopant material are optimized.
Abstract:
An electroluminescent element is disclosed, comprising an electroluminescent material and a fluorescent substance emitting light having an emission maximum at the wavelength different from that of light emitted from the electroluminescent material upon absorption of the light emitted from the electroluminescent material. A color conversion filter is also disclosed, comprising a fluorescent substance emitting light having an emission maximum at the wavelengths of 400 to 700 nm upon absorption of the light emitted from the electroluminescent material.
Abstract:
A blue luminescent material with excellent thermal stability and long-term stability, a light-emitting element utilizing this material, and a device utilizing this light-emitting element are provided. In addition, the present invention provides a light-emitting element that has good color purity, does not reduce current efficiency in high luminance regions, and does not degrade lifetime characteristics. The luminescent material is a polynuclear metal complex compound having a pyrazabole structure.
Abstract:
A class of organic metal complexes with mixed ligands for organic light emitting diodes are designed and characterized as the formula:(L2L3M)n. In this formula: L2 is a bidentate ligand which has at least one coordinate atom of oxygen; L3 is a tridentate ligand with three chelate points; M is trivalent metal selected from the group consisting of Al, Ga, In, Tl, and Ir; and n is an integer of from 1 to 2. In Formula (3), X, Y independently represent CH or N and II, III are unsubstituted or substituted aryl or heteroalkyl groups. The substituent groups can be alkyl having 1-8 carbon atoms, halogen, cyano, amino, amido, sulfonyl, carbonyl, aryl, or heteroalkyl groups such as furan, thiophene, pyrrole, pyridine, etc. These complexes can be used as emitting materials or electron transporting materials in organic EL devices. 1
Abstract translation:一类有机金属配合物与有机发光二极管的混合配体被设计和表征如下:(L 2 L 3 M)n。 在该式中:L 2是具有至少一个氧原子的二齿配位体; L 3是具有三个螯合点的三齿配体; M是选自Al,Ga,In,Tl和Ir中的三价金属; 在式(3)中,X,Y独立地表示CH或N,II,III是未取代或取代的芳基或杂烷基。 取代基可以是具有1-8个碳原子的烷基,卤素,氰基,氨基,酰氨基,磺酰基,羰基,芳基或杂烷基如呋喃,噻吩,吡咯,吡啶等。这些络合物可以用作发光材料 或有机EL器件中的电子传输材料。
Abstract:
An electroluminescent element, comprising an electroluminescent material and a fluorescent substance emitting light having an emission maximum at the wavelength different from that of light emitted from the electroluminescent material upon absorption of the light emitted from the electroluminescent material. A color conversion filter is also disclosed, comprising a fluorescent substance emitting light having an emission maximum at the wavelengths of 400 to 700 nm upon absorption of the light emitted from the electroluminescent material.
Abstract:
In an organic electroluminescent device constructed by providing at least an emitting layer and a carrier transport layer using an organic material between a hole injection electrode and an electron injection electrode, at least one of the emitting layer and the carrier transport layer contains a chelate compound of a chromone derivative with zinc or aluminum, a chelate compound of a 3-hydroxyflavone derivative with a metal, a chelate compound composed of an 8-quinolinol derivative dimer and another ligant which are coordinated to a metal, or a chelate compound composed of two 8-quinolinol derivatives coordinated to a metal and one halogen bonded thereto.
Abstract:
An improved method for forming films of organic-metallic complexes in which an organic complex and a labile metal salt are vaporised together or sequentially and the vapour condensed on to a substrate to form a film or layer of the organic-metallic complex on the substrate. The method produces electroluminescent films with improved performance.
Abstract:
In an organic electroluminescent device constructed by providing at least an emitting layer and a carrier transport layer using an organic material between a hole injection electrode and an electron injection electrode, at least one of the emitting layer and the carrier transport layer contains a chelate compound of a chromone derivative with zinc or aluminum, a chelate compound of a 3-hydroxyflavone derivative with a metal, a chelate compound composed of an 8-quinolinol derivative dimer and another ligant which are coordinated to a metal, or a chelate compound composed of two 8-quinolinol derivatives coordinated to a metal and one halogen bonded thereto.
Abstract:
An organic electroluminescent device is disclosed, which can obtain high luminance and high efficiency. The organic electroluminescent device includes a luminescent layer formed by doping a phosphor material on a host material expressed by the following chemical formula: 1 where R is any one selected from a group consisting of H, an alkyl group, an allyl group, and halogen.
Abstract:
An organic EL device with high brightness and long lifetime, which is capable of driving at low voltage, is provided. As the material for constituting the organic EL device, a specific styryl amino group-containing diphenyl aminoarylene represented by the following general formula null1null (wherein Ar1 is a substituted or unsubstituted arylene group having 5-42 carbons, Ar2 to Ar5 each independently represents substituted or unsubstituted C6 to C20 aryl groups, at least one of which is a styrylphenyl group represented by the following general formula null2null) is used in a light-emitting zone adjacent to an anode. 1