Novel phosphorescent neutral iridium(III) complex with the steric hindrance for highly efficient red organic light-emitting diodes |
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| Authors: | Peng Tao Yanqin Miao Kexiang Wang Hongxin Li Qiang Zhao Hua Wang Jie Li Bingshe Xu Wei Huang |
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| Affiliation: | 1. Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, PR China;2. Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210023, PR China |
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| Abstract: | ![]()
A novel and highly efficient thiophenquinolone-based red iridium(III) complex bearing a bulky fluorophenyl moiety is designed and synthesized. The complex shows intensive red phosphorescence (596 nm with shoulder at 642 nm), high photoluminescence efficiency (0.62) and broad full width at half maximum (81 nm). The bulky fluorophenyl moiety introduced into the complex could improve the efficiency of electroluminescence with the maximum current efficiency, power efficiency and the external quantum efficiency up to 29.0 cd/A, 30.4 lm/W and 17.6% due to the effective steric hindrance in solid states. |
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| Keywords: | Iridium(III) complexes Organic light-emitting diodes Phosphorescence Structure-property relationships Triazole derivatives |
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