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Simple non-fused electron acceptors for efficient and stable organic solar cells

Author

Listed:
  • Zhi-Peng Yu

    (Zhejiang University)

  • Zhi-Xi Liu

    (Zhejiang University)

  • Fang-Xiao Chen

    (Zhejiang University)

  • Ran Qin

    (Zhejiang University)

  • Tsz-Ki Lau

    (The Chinese University of Hong Kong)

  • Jing-Lin Yin

    (Zhejiang University)

  • Xueqian Kong

    (Zhejiang University)

  • Xinhui Lu

    (The Chinese University of Hong Kong)

  • Minmin Shi

    (Zhejiang University)

  • Chang-Zhi Li

    (Zhejiang University)

  • Hongzheng Chen

    (Zhejiang University)

Abstract

The flexibility in structural design of organic semiconductors endows organic solar cells (OSCs) not only great function-tunabilities, but also high potential toward practical application. In this work, simple non-fused-ring electron acceptors are developed through two-step synthesis from single aromatic units for constructing efficient OSCs. With the assistance of non-covalent interactions, these rotatable non-fused acceptors (in solution) allow transiting into planar and stackable conformation in condensed solid, promoting acceptors not only feasible solution-processability, but also excellent film characteristics. As results, decent power conversion efficiencies of 10.27% and 13.97% can be achieved in single and tandem OSCs consisting of simple solution-cast blends, in which the fully unfused acceptors exhibit exceptionally low synthetic complexity index. In addition, the unfused acceptor and its based OSCs exhibit promising stabilities under continuous illumination. Overall, this work reveals valuable insights on the structural design of simple and effective electron acceptors with great practical perspectives.

Suggested Citation

  • Zhi-Peng Yu & Zhi-Xi Liu & Fang-Xiao Chen & Ran Qin & Tsz-Ki Lau & Jing-Lin Yin & Xueqian Kong & Xinhui Lu & Minmin Shi & Chang-Zhi Li & Hongzheng Chen, 2019. "Simple non-fused electron acceptors for efficient and stable organic solar cells," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10098-z
    DOI: 10.1038/s41467-019-10098-z
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