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Random terpolymer based on thiophene-thiazolothiazole unit enabling efficient non-fullerene organic solar cells

Author

Listed:
  • Jingnan Wu

    (Soochow University)

  • Guangwei Li

    (Soochow University)

  • Jin Fang

    (Soochow University)

  • Xia Guo

    (Soochow University)

  • Lei Zhu

    (Shanghai Jiao Tong University)

  • Bing Guo

    (Soochow University)

  • Yulong Wang

    (Soochow University)

  • Guangye Zhang

    (eFlexPV Limited, Flat/RM B, 12/F, Hang Seng Causeway Bay BLDG)

  • Lingeswaran Arunagiri

    (Hong Kong University of Science and Technology (HKUST))

  • Feng Liu

    (Shanghai Jiao Tong University)

  • He Yan

    (Hong Kong University of Science and Technology (HKUST))

  • Maojie Zhang

    (Soochow University)

  • Yongfang Li

    (Soochow University
    Chinese Academy of Sciences)

Abstract

Developing a high-performance donor polymer is critical for achieving efficient non-fullerene organic solar cells (OSCs). Currently, most high-efficiency OSCs are based on a donor polymer named PM6, unfortunately, whose performance is highly sensitive to its molecular weight and thus has significant batch-to-batch variations. Here we report a donor polymer (named PM1) based on a random ternary polymerization strategy that enables highly efficient non-fullerene OSCs with efficiencies reaching 17.6%. Importantly, the PM1 polymer exhibits excellent batch-to-batch reproducibility. By including 20% of a weak electron-withdrawing thiophene-thiazolothiazole (TTz) into the PM6 polymer backbone, the resulting polymer (PM1) can maintain the positive effects (such as downshifted energy level and reduced miscibility) while minimize the negative ones (including reduced temperature-dependent aggregation property). With higher performance and greater synthesis reproducibility, the PM1 polymer has the promise to become the work-horse material for the non-fullerene OSC community.

Suggested Citation

  • Jingnan Wu & Guangwei Li & Jin Fang & Xia Guo & Lei Zhu & Bing Guo & Yulong Wang & Guangye Zhang & Lingeswaran Arunagiri & Feng Liu & He Yan & Maojie Zhang & Yongfang Li, 2020. "Random terpolymer based on thiophene-thiazolothiazole unit enabling efficient non-fullerene organic solar cells," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18378-9
    DOI: 10.1038/s41467-020-18378-9
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    Cited by:

    1. Xuelin Wang & Qianqian Sun & Jinhua Gao & Jian Wang & Chunyu Xu & Xiaoling Ma & Fujun Zhang, 2021. "Recent Progress of Organic Photovoltaics with Efficiency over 17%," Energies, MDPI, vol. 14(14), pages 1-27, July.
    2. Jiehao Fu & Patrick W. K. Fong & Heng Liu & Chieh-Szu Huang & Xinhui Lu & Shirong Lu & Maged Abdelsamie & Tim Kodalle & Carolin M. Sutter-Fella & Yang Yang & Gang Li, 2023. "19.31% binary organic solar cell and low non-radiative recombination enabled by non-monotonic intermediate state transition," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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