Heteroatom substitution-induced asymmetric A-D-A type non-fullerene acceptor for efficient organic solar cells

Li, Chao; Song, Jiali; Cai, Yunhao; Han, Guangchao; Zheng, Wenyu; Yi, Yuanping; Ryu, Hwa Sook; Woo, Han Young; Sun, Yanming

doi:10.1016/j.jechem.2019.03.009

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Heteroatom substitution-induced asymmetric A-D-A type non-fullerene acceptor for efficient organic solar cells

Li, Chao;
Song, Jiali;
Cai, Yunhao;
Han, Guangchao;
Zheng, Wenyu;
... Woo, Han Young;
외 3명

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49

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49

초록

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.

키워드

Asymmetric non-fullerene acceptors; Heteroatom substitution; Organic solar cells; Power conversion efficiency; SMALL-MOLECULE ACCEPTORS; ELECTRON-ACCEPTOR; ENERGY-LEVEL; SIDE-CHAINS; POLYMER; BACKBONE; ENABLES; UNIT

제목: Heteroatom substitution-induced asymmetric A-D-A type non-fullerene acceptor for efficient organic solar cells

저자: Li, Chao; Song, Jiali; Cai, Yunhao; Han, Guangchao; Zheng, Wenyu; Yi, Yuanping; Ryu, Hwa Sook; Woo, Han Young; Sun, Yanming

DOI: 10.1016/j.jechem.2019.03.009

발행일: 2020-01

유형: Article

저널명: Journal of Energy Chemistry

권: 40

페이지: 144 ~ 150