abstract |
An electroluminescent device is an iridium complex comprising a 2-benzo [b] thiophenyl ligand and a benzimidazole ligand, such as bis [thiophen-2-yl-pyridine-C 2 , N ′]-2- (2-pyridyl)- It has an electroluminescent layer containing benzimidazole = iridium. [Selection figure] None |