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Balancing carrier transport in interconnection layer for efficient perovskite/organic tandem solar cells

Author

Listed:
  • Yidan An

    (Kowloon)

  • Nan Zhang

    (Kowloon
    Kowloon)

  • Qi Liu

    (Kowloon)

  • Wenlin Jiang

    (Kowloon)

  • Gengxin Du

    (Kowloon
    Kowloon)

  • Desui Chen

    (Kowloon)

  • Ming Liu

    (Kowloon)

  • Xiaofeng Huang

    (Kowloon)

  • Tingfeng Lei

    (Kowloon
    Kowloon)

  • Quanrun Qiu

    (Kowloon
    Kowloon)

  • Francis R. Lin

    (Kowloon
    Kowloon)

  • Xiao Cheng Zeng

    (Kowloon)

  • Alex K.-Y. Jen

    (Kowloon
    Kowloon
    Kowloon)

  • Hin-Lap Yip

    (Kowloon
    Kowloon
    Kowloon
    Kowloon)

Abstract

While individual perovskite and organic solar cells have demonstrated remarkable performance, achieving similar success in high-efficiency perovskite/organic tandem solar cells (TSCs) has been challenging, primarily due to large voltage deficits and severe non-radiative recombination. By exploring the fundamental mechanisms of carrier losses, we identify that imbalanced carrier transport, particularly inadequate hole transport in the organic subcell significantly limits the overall performance of perovskite/organic TSCs. Herein, we implement a hole transport self-assembled monolayer (SAM) anchored to MoO3, which converts the inherently n-type MoO3 to a p-type surface. Further, a SAM/MoO3/SAM sandwich hole transport configuration is introduced, which significantly enhances hole extraction, facilitating a more balanced carrier transport, and markedly suppressing non-radiative recombination at the interconnection layer (ICL). The resulting perovskite/organic TSCs achieve a power conversion efficiency (PCE) of 26.05%, with an open-circuit voltage of 2.21 V (certified at 2.216 V) and enhanced operation stability.

Suggested Citation

  • Yidan An & Nan Zhang & Qi Liu & Wenlin Jiang & Gengxin Du & Desui Chen & Ming Liu & Xiaofeng Huang & Tingfeng Lei & Quanrun Qiu & Francis R. Lin & Xiao Cheng Zeng & Alex K.-Y. Jen & Hin-Lap Yip, 2025. "Balancing carrier transport in interconnection layer for efficient perovskite/organic tandem solar cells," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58047-3
    DOI: 10.1038/s41467-025-58047-3
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