| abstract |
An iridium complex is disclosed. The iridium complex includes two primary ligands selected from 2-(4,6-difluoromethyl and trifluoromethyl pyridine-3-) butypyridine, 2-(4,6-difluoromethyl and trifluoromethyl pyridine-4-) butypyridine, 2-(4,6-difluoromethyl and trifluoromethyl pyridine-3-) butypyrimidine, 2-(4,6-difluoromethyl and trifluoromethyl pyridine-4-) butypyrimidine, 2-(4,6-difluoromethyl and trifluoromethyl pyridine-3-) butypyrazine, 2-(4,6-difluoromethyl and trifluoromethyl pyridine-4-) butypyrazine, and the derivatives of 2-(4,6-difluoromethyl and trifluoromethyl pyridine-3-) butytriazine and 2-(4,6-difluoromethyl and trifluoromethyl pyridine-4-) butytriazine. The iridium complex further includes an auxiliary acetylacetone ligand. Such new iridium complex in the invention not only owns the high luminous efficiency, stable chemical property, easy sublimation purification and is other advantages, but also has good device performance. By embellishing the molecular structure of the primary ligand, it could adjust the light intensity and efficiency of complexes within the scope of green light wavelength, which provides the convenience for the design and production of organic light emitting device and lighting source. |