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

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

    Research output: Contribution to journalArticlepeer-review

    43 Citations (Scopus)

    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 languageEnglish
    Pages (from-to)144-150
    Number of pages7
    JournalJournal of Energy Chemistry
    Volume40
    DOIs
    Publication statusPublished - 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

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