- Biscarbazole derivative host materials and green emitter for OLED emissive region
-
An organic electroluminescence device utilizes a novel combination comprising one or more biscarbazole derivative compounds as the phosphorescent host material in combination with a green phosphorescent dopant material in the light emitting region of the device, where the biscarbazole derivative compounds are represented by a formula (1A) or (1B) below; where A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3; and the green phosphorescent dopant material is a phosphorescent organometallic complex having a chemical structure represented by LL′L″M wherein M is a metal that forms octahedral complexes, L, L′, and L″ are equivalent or inequivalent bidentate ligands wherein each L comprises a substituted or unsubstituted phenylpyridine ligand coordinated to M through an sp2 hybridized carbon and N; and, one of L, L′ and L″ is different from at least one of the other two.
- -
-
Page/Page column 97-98
(2018/05/24)
-
- Organic compound, and Organic light emitting diode and Organic light emitting diode display device including the same
-
Provided is an organic compound which has a core with a heterocyclic structure including at least two nitrogen, and also ensures high luminous efficiency. The organic compound can be used as a common host for light-emitting material layers, electron transfer layers, and an electrode injection layers, thereby simplifying production processes for organic light-emitting diodes and organic light-emitting diode devices, and ensuring high luminous efficiency with low driving voltage.COPYRIGHT KIPO 2017
- -
-
-
- Organic electroluminescent element and material for organic electroluminescent elements
-
An organic electroluminescence device includes: a cathode; an anode; and an organic thin-film layer having one or more layers and provided between the anode and the cathode, in which the organic layer includes an emitting layer. The emitting layer includes a first host material, a second host material and a phosphorescent dopant material. The first host material is a compound represented by a formula (1A). The second host material is a compound represented by a formula (2A).
- -
-
Page/Page column 214
(2017/08/08)
-
- BIS-CARBAZOLE DERIVATIVE, MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
-
A biscarbazole derivative of the invention is represented by a formula (1A or (1B) below. In the formula (1A) or (1B): A1 represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A2 represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X1 and X2 each are a linking group; Y1 to Y4 each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.
- -
-
Page/Page column 118-119
(2012/02/15)
-