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Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18%

Author

Listed:
  • Chengliang He

    (Zhejiang University)

  • Zeng Chen

    (Zhejiang University)

  • Tonghui Wang

    (The University of Arizona)

  • Ziqiu Shen

    (Zhejiang University)

  • Yaokai Li

    (Zhejiang University)

  • Jiadong Zhou

    (South China University of Technology)

  • Jianwei Yu

    (Linköping University)

  • Huiyu Fang

    (Xi’an Jiaotong University)

  • Yuhao Li

    (Chinese University of Hong Kong, New Territories)

  • Shuixing Li

    (Zhejiang University)

  • Xinhui Lu

    (Chinese University of Hong Kong, New Territories)

  • Wei Ma

    (Xi’an Jiaotong University)

  • Feng Gao

    (Linköping University)

  • Zengqi Xie

    (South China University of Technology)

  • Veaceslav Coropceanu

    (The University of Arizona)

  • Haiming Zhu

    (Zhejiang University)

  • Jean-Luc Bredas

    (The University of Arizona)

  • Lijian Zuo

    (Zhejiang University
    Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center)

  • Hongzheng Chen

    (Zhejiang University)

Abstract

Enhancing the luminescence property without sacrificing the charge collection is one key to high-performance organic solar cells (OSCs), while limited by the severe non-radiative charge recombination. Here, we demonstrate efficient OSCs with high luminescence via the design and synthesis of an asymmetric non-fullerene acceptor, BO-5Cl. Blending BO-5Cl with the PM6 donor leads to a record-high electroluminescence external quantum efficiency of 0.1%, which results in a low non-radiative voltage loss of 0.178 eV and a power conversion efficiency (PCE) over 15%. Importantly, incorporating BO-5Cl as the third component into a widely-studied donor:acceptor (D:A) blend, PM6:BO-4Cl, allows device displaying a high certified PCE of 18.2%. Our joint experimental and theoretical studies unveil that more diverse D:A interfacial conformations formed by asymmetric acceptor induce optimized blend interfacial energetics, which contributes to the improved device performance via balancing charge generation and recombination.

Suggested Citation

  • Chengliang He & Zeng Chen & Tonghui Wang & Ziqiu Shen & Yaokai Li & Jiadong Zhou & Jianwei Yu & Huiyu Fang & Yuhao Li & Shuixing Li & Xinhui Lu & Wei Ma & Feng Gao & Zengqi Xie & Veaceslav Coropceanu , 2022. "Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18%," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30225-7
    DOI: 10.1038/s41467-022-30225-7
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    Cited by:

    1. Yuanyuan Jiang & Yixin Li & Feng Liu & Wenxuan Wang & Wenli Su & Wuyue Liu & Songjun Liu & Wenkai Zhang & Jianhui Hou & Shengjie Xu & Yuanping Yi & Xiaozhang Zhu, 2023. "Suppressing electron-phonon coupling in organic photovoltaics for high-efficiency power conversion," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Yuyan Huang & Minhui Shen & Huijie Yan & Yingge He & Jianqiao Xu & Fang Zhu & Xin Yang & Yu-Xin Ye & Gangfeng Ouyang, 2024. "Achieving a solar-to-chemical efficiency of 3.6% in ambient conditions by inhibiting interlayer charges transport," Nature Communications, Nature, vol. 15(1), pages 1-15, December.

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