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.
Original language | English |
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Pages (from-to) | 144-150 |
Number of pages | 7 |
Journal | Journal of Energy Chemistry |
Volume | 40 |
DOIs | |
Publication status | Published - 2020 Jan |
Bibliographical note
Publisher Copyright:© 2019 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences
Keywords
- Asymmetric non-fullerene acceptors
- Heteroatom substitution
- Organic solar cells
- Power conversion efficiency
ASJC Scopus subject areas
- Fuel Technology
- Energy Engineering and Power Technology
- Energy (miscellaneous)
- Electrochemistry