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9 results on '"Geng, Feng‐Xia"'

2. Managing Locally Excited and Charge‐Transfer Triplet States to Facilitate Up‐Conversion in Red TADF Emitters That Are Available for Both Vacuum‐ and Solution‐Processes

Author

Chen, Jia‐Xiong, primary, Xiao, Ya‐Fang, additional, Wang, Kai, additional, Sun, Dianming, additional, Fan, Xiao‐Chun, additional, Zhang, Xiang, additional, Zhang, Ming, additional, Shi, Yi‐Zhong, additional, Yu, Jia, additional, Geng, Feng‐Xia, additional, Lee, Chun‐Sing, additional, and Zhang, Xiao‐Hong, additional

Published
2020
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4. Cover Picture: Red/Near‐Infrared Thermally Activated Delayed Fluorescence OLEDs with Near 100 % Internal Quantum Efficiency (Angew. Chem. Int. Ed. 41/2019)

Author

Chen, Jia‐Xiong, primary, Tao, Wen‐Wen, additional, Chen, Wen‐Cheng, additional, Xiao, Ya‐Fang, additional, Wang, Kai, additional, Cao, Chen, additional, Yu, Jia, additional, Li, Shengliang, additional, Geng, Feng‐Xia, additional, Adachi, Chihaya, additional, Lee, Chun‐Sing, additional, and Zhang, Xiao‐Hong, additional

Published
2019
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5. Titelbild: Red/Near‐Infrared Thermally Activated Delayed Fluorescence OLEDs with Near 100 % Internal Quantum Efficiency (Angew. Chem. 41/2019)

Author

Chen, Jia‐Xiong, primary, Tao, Wen‐Wen, additional, Chen, Wen‐Cheng, additional, Xiao, Ya‐Fang, additional, Wang, Kai, additional, Cao, Chen, additional, Yu, Jia, additional, Li, Shengliang, additional, Geng, Feng‐Xia, additional, Adachi, Chihaya, additional, Lee, Chun‐Sing, additional, and Zhang, Xiao‐Hong, additional

Published
2019
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7. Managing Locally Excited and Charge‐Transfer Triplet States to Facilitate Up‐Conversion in Red TADF Emitters That Are Available for Both Vacuum‐ and Solution‐Processes.

Author

Chen, Jia‐Xiong, Xiao, Ya‐Fang, Wang, Kai, Sun, Dianming, Fan, Xiao‐Chun, Zhang, Xiang, Zhang, Ming, Shi, Yi‐Zhong, Yu, Jia, Geng, Feng‐Xia, Lee, Chun‐Sing, and Zhang, Xiao‐Hong

Subjects
DELAYED fluorescence, RED, QUANTUM efficiency
Abstract

Developing red thermally activated delayed fluorescence (TADF) emitters for high‐performance OLEDs is still facing great challenge. Herein, three red TADF emitters, pDBBPZ‐DPXZ, pDTBPZ‐DPXZ, and oDTBPZ‐DPXZ, are designed and synthesized with same donor–acceptor (D‐A) backbone with different peripheral groups attaching on the A moieties. Their lowest triplet states change from locally excited to charge transfer character leading to significantly enhance reverse intersystem crossing process. In particular, oDTBPZ‐DPXZ exhibits efficient TADF feature and exciton utilization. It not only achieves an external quantum efficiency (EQE) of 20.1 % in red vacuum‐processed OLED, but also realize a high EQE of 18.5 % in a solution‐processed OLED, which is among the best results in solution‐processed red TADF OLEDs. This work provides an effective strategy for designing red TADF molecules by managing energy level alignments to facilitate the up‐conversion process and thus enhance exciton harvesting. [ABSTRACT FROM AUTHOR]

Published
2021
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8. Efficient Orange-Red Thermally Activated Delayed Fluorescence Emitters Feasible for Both Thermal Evaporation and Solution Process

Author

Chen, Jia-Xiong, primary, Tao, Wen-Wen, additional, Xiao, Ya-Fang, additional, Wang, Kai, additional, Zhang, Ming, additional, Fan, Xiao-Chun, additional, Chen, Wen-Cheng, additional, Yu, Jia, additional, Li, Shengliang, additional, Geng, Feng-Xia, additional, Zhang, Xiao-Hong, additional, and Lee, Chun-Sing, additional

Published
2019
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9. Isomeric thermally activated delayed fluorescence emitters based on indolo[2,3-b]acridine electron-donor: a compromising optimization for efficient orange–red organic light-emitting diodes

Author

Chen, Jia-Xiong, primary, Tao, Wen-Wen, additional, Xiao, Ya-Fang, additional, Tian, Shuang, additional, Chen, Wen-Cheng, additional, Wang, Kai, additional, Yu, Jia, additional, Geng, Feng-Xia, additional, Zhang, Xiao-Hong, additional, and Lee, Chun-Sing, additional

Published
2019
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