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Heteroatom substitution-induced asymmetric A-D-A type non-fullerene acceptor for efficient organic solar cells
- Authors
- Li, Chao; Song, Jiali; Cai, Yunhao; Han, Guangchao; Zheng, Wenyu; Yi, Yuanping; Ryu, Hwa Sook; Woo, Han Young; Sun, Yanming
- Issue Date
- 1월-2020
- Publisher
- ELSEVIER
- Keywords
- Asymmetric non-fullerene acceptors; Heteroatom substitution; Organic solar cells; Power conversion efficiency
- Citation
- JOURNAL OF ENERGY CHEMISTRY, v.40, pp.144 - 150
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF ENERGY CHEMISTRY
- Volume
- 40
- Start Page
- 144
- End Page
- 150
- ISSN
- 2095-4956
- Abstract
- Research on asymmetric A-D-A structured non-fullerene acceptors has lagged far behind the development of symmetric counterpart. In this contribution, by simply replacing one sulfur atom in indacenodithiophene unit with a selenium atom, an asymmetric building block SePT and a corresponding asymmetric non-fullerene acceptor SePT-IN have been developed. Asymmetric SePT-IN achieved a high efficiency of 10.20% in organic solar cells when blended with PBT1-C, much higher than that of symmetric TPT-IN counterpart (8.91%). Our results demonstrated an effective heteroatom substitution strategy to develop asymmetric A-D-A structured non-fullerene acceptors. (C) 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
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