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Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells

Author

Listed:
  • Zuolin Zhang

    (Hebei University of Technology)

  • Yinsu Feng

    (Hebei University of Technology)

  • Jike Ding

    (Hebei University of Technology)

  • Quanxing Ma

    (Hebei University of Technology
    Fudan University)

  • Hong Zhang

    (Fudan University)

  • Jiajia Zhang

    (Fuyang Normal University)

  • Mengjia Li

    (Hebei University of Technology)

  • Taoran Geng

    (Hebei University of Technology)

  • Wenhuan Gao

    (Hebei University of Technology)

  • Yang Wang

    (Chinese Academy of Sciences)

  • Boxue Zhang

    (11 rue P. et M. Curie)

  • Thierry Pauporté

    (11 rue P. et M. Curie)

  • Jian-Xin Tang

    (Taipa)

  • Hongjian Chen

    (Hebei University of Technology)

  • Jiangzhao Chen

    (Kunming University of Science and Technology)

  • Cong Chen

    (Hebei University of Technology
    Taipa)

Abstract

Interfacial trap-assisted nonradiative recombination hampers the development of metal halide perovskite solar cells (PSCs). Herein, we report a rationally designed universal passivator to realize highly efficient and stable single junction and tandem PSCs. Multiple defects are simultaneously passivated by the synergistic effect of anion and cation. Moreover, the defect healing effect is precisely modulated by carefully controlling the number of hydrogen atoms on cations and steric hindrance. Due to minimized interfacial energy loss, L-valine benzyl ester p-toluenesulfonate (VBETS) modified inverted PSCs deliver a power conversion efficiency (PCE) of 26.28% using vacuum flash processing technology. Moreover, by suppressing carrier recombination, the large-area modules with an aperture area of 32.144 cm2 and perovskite/Si tandem solar cells coupled with VBETS passivation deliver a PCE of 21.00% and 30.98%, respectively. This work highlights the critical role of the number of hydrogen atoms and steric hindrance in designing molecular modulators to advance the PCE and stability of PSCs.

Suggested Citation

  • Zuolin Zhang & Yinsu Feng & Jike Ding & Quanxing Ma & Hong Zhang & Jiajia Zhang & Mengjia Li & Taoran Geng & Wenhuan Gao & Yang Wang & Boxue Zhang & Thierry Pauporté & Jian-Xin Tang & Hongjian Chen & , 2025. "Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56068-6
    DOI: 10.1038/s41467-025-56068-6
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