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 journalArticle

4 Citations (Scopus)


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
Publication statusPublished - 2020 Jan 1



  • 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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