Efficient narrow green organic light-emitting diodes with low efficiency roll-offs based on iridium(iii) complexes containing indolo[3,2,1-jk]carbazole and pyrimidine units

Author:

Liu Qi-Ming1,Yuan Li1,Liao Xiang-Ji1,Zhong Xiao-Sheng1,Ni Hua-Xiu1,Wang Yu1,Zhao Yue1ORCID,Zheng You-Xuan12ORCID

Affiliation:

1. State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China

2. Shenzhen Research Institute of Nanjing University, Shenzhen 518057, P. R. China

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 EQEmax of 31.3% and extremely low efficiency roll-offs.

Funder

National Natural Science Foundation of China

Basic and Applied Basic Research Foundation of Guangdong Province

Publisher

Royal Society of Chemistry (RSC)

Subject

Materials Chemistry,General Materials Science

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