Simultaneous Optimization of Charge‐Carrier Balance and Luminous Efficacy in Highly Efficient White Polymer Light‐Emitting Devices
Jianhua Zou(South China University of Technology), Hao Wu(Hong Kong Baptist University), Hao Wu(Hong Kong Baptist University), Ching‐Shan Lam(Hong Kong Baptist University), Chuandao Wang(University of Hong Kong), Jing Zhu(University of Hong Kong), Chengmei Zhong(South China University of Technology), Sujun Hu(Hong Kong Baptist University), Cheuk‐Lam Ho(Hong Kong Baptist University), Guijiang Zhou(Hong Kong Baptist University), Hongbin Wu(Hong Kong Baptist University), Hongbin Wu(Hong Kong Baptist University), Wallace C. H. Choy(Hong Kong Baptist University), Junbiao Peng(Hong Kong Baptist University), Yong Cao(South China University of Technology), Wai‐Yeung Wong(Hong Kong Baptist University)
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Abstract
White polymer light-emitting devices with a peak forward-viewing power efficiency close to 40 lm W−1, corresponding to an external quantum efficiency of 28.8% and a luminous efficiency of 60 cd A−1, are demonstrated. The devices are based on two newly synthesized yellow-emitting iridium complexes functionalized with the sterically hindered diarylfluorene chromophores and are fabricated by a simple solution-processing method.
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