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Organic solar cells using oligomer acceptors for improved stability and efficiency

Author

Listed:
  • Youcai Liang

    (South China University of Technology)

  • Difei Zhang

    (South China University of Technology
    Friedrich-Alexander-Universität Erlangen-Nürnberg)

  • Zerun Wu

    (South China University of Technology)

  • Tao Jia

    (South China University of Technology)

  • Larry Lüer

    (Friedrich-Alexander-Universität Erlangen-Nürnberg)

  • Haoran Tang

    (South China University of Technology)

  • Ling Hong

    (South China University of Technology)

  • Jiabin Zhang

    (South China University of Technology)

  • Kai Zhang

    (South China University of Technology)

  • Christoph J. Brabec

    (Friedrich-Alexander-Universität Erlangen-Nürnberg
    Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI ERN) Forschungszentrum Jülich (FZJ))

  • Ning Li

    (South China University of Technology)

  • Fei Huang

    (South China University of Technology)

Abstract

The power conversion efficiencies of organic solar cells (OSCs) have reached over 19%. However, the combination of high efficiency and long-term stability is still a major conundrum of commercialization. Here a Y6-analogue and a 2,2′-bithiophene unit are utilized to construct a series of oligomer acceptors to investigate the effect of molecular size and packing properties on photovoltaic performance. By altering the molecular chain length, we modify the thermal properties, crystallization behaviours and molecular packing and achieve an optimal microstructure and a more stable morphology in blend films. A combination of efficiencies over 15% and an extrapolated T80 lifetime over 25,000 h, which equates to an average lifetime exceeding 16 years in Guangzhou, is achieved for binary OSCs based on an oligomer acceptor. This work emphasizes the importance of oligomeric strategy in tuning molecular packing behaviours and blend morphology, leading to development of novel non-fullerene acceptors for stable and efficient OSCs.

Suggested Citation

  • Youcai Liang & Difei Zhang & Zerun Wu & Tao Jia & Larry Lüer & Haoran Tang & Ling Hong & Jiabin Zhang & Kai Zhang & Christoph J. Brabec & Ning Li & Fei Huang, 2022. "Organic solar cells using oligomer acceptors for improved stability and efficiency," Nature Energy, Nature, vol. 7(12), pages 1180-1190, December.
    • Handle: RePEc:nat:natene:v:7:y:2022:i:12:d:10.1038_s41560-022-01155-x
    DOI: 10.1038/s41560-022-01155-x
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    Cited by:

    1. Caixuan Wang & Xiaoming Ma & Dan Deng & Hao Zhang & Rui Sun & Jianqi Zhang & Lili Zhang & Mengying Wu & Jie Min & Zhi-Guo Zhang & Zhixiang Wei, 2024. "Giant dimeric donors for all-giant-oligomer organic solar cells with efficiency over 16% and superior photostability," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Yang Bai & Ze Zhang & Qiuju Zhou & Hua Geng & Qi Chen & Seoyoung Kim & Rui Zhang & Cen Zhang & Bowen Chang & Shangyu Li & Hongyuan Fu & Lingwei Xue & Haiqiao Wang & Wenbin Li & Weihua Chen & Mengyuan , 2023. "Geometry design of tethered small-molecule acceptor enables highly stable and efficient polymer solar cells," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Hongmei Zhuo & Xiaojun Li & Jinyuan Zhang & Can Zhu & Haozhe He & Kan Ding & Jing Li & Lei Meng & Harald Ade & Yongfang Li, 2023. "Precise synthesis and photovoltaic properties of giant molecule acceptors," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    4. Zhen Wang & Yu Guo & Xianzhao Liu & Wenchao Shu & Guangchao Han & Kan Ding & Subhrangsu Mukherjee & Nan Zhang & Hin-Lap Yip & Yuanping Yi & Harald Ade & Philip C. Y. Chow, 2024. "The role of interfacial donor–acceptor percolation in efficient and stable all-polymer solar cells," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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