Constructing a new polymer acceptor enabled non-halogenated solvent-processed all-polymer solar cell with an efficiency of 13.8

A new polymer acceptor, PS1 , was developed by connecting the non-fullerene acceptor building block of dithienothiophen[3,2- b ]pyrrolobenzotriazole capped with 3-(dicyanomethylidene)-indan-1-one through a thiophene spacer. The solubilizing alkyl side groups in the central unit enabled PS1 to be rea...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2021-01, Vol.57 (7), p.935-938
Main Authors: Zhu, Chunguang, Li, Zhenye, Zhong, Wenkai, Peng, Feng, Zeng, Zhaomiyi, Ying, Lei, Huang, Fei, Cao, Yong
Format: Article
Language:English
Subjects:
Energy conversion efficiency
Fullerenes
Halogenation
Photovoltaic cells
Polymers
Solar cells
Solvents
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Summary:A new polymer acceptor, PS1 , was developed by connecting the non-fullerene acceptor building block of dithienothiophen[3,2- b ]pyrrolobenzotriazole capped with 3-(dicyanomethylidene)-indan-1-one through a thiophene spacer. The solubilizing alkyl side groups in the central unit enabled PS1 to be readily dissolved in non-chlorinated solvents. By using 2-methyltetrahydrofuran as the processing solvent, the all-polymer solar cell (all-PSC) containing PS1 and a polymer donor PTzBI-oF in the light-harvesting layer exhibited an impressively high power conversion efficiency of 13.8%. The new polymer donor PS1 can be easily dissolved in a non-chlorinated solvent, and it exhibited a remarkable PCE when processed with 2-methyltetrahydrofuran.
ISSN:1359-7345
1364-548X
DOI:10.1039/d0cc07213c