Efficient narrow green organic light-emitting diodes with low efficiency roll-offs based on iridium(<scp>iii</scp>) complexes containing indolo[3,2,1-<i>jk</i>]carbazole and pyrimidine units
Qiming Liu, Li Yuan, Xiang‐Ji Liao, Xiaosheng Zhong, Hua‐Xiu Ni, Yu Wang, Yue Zhao, You‐Xuan Zheng
Abstract
Two green Ir( iii ) complexes based on the ligands containing indolo[3,2,1- jk ]carbazole and pyrimidine units show high PLQYs and small FWHMs. The OLEDs show good performances with an EQE max of 31.3% and extremely low efficiency roll-offs.
Topics & Concepts
CarbazoleIridiumOLEDPyrimidineMaterials sciencePhotoluminescencePhotochemistryOptoelectronicsChemistryOrganic chemistryStereochemistryNanotechnologyCatalysisLayer (electronics)Organic Light-Emitting Diodes ResearchOrganic Electronics and PhotovoltaicsLuminescence and Fluorescent Materials