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Stabilizing buried interface by bilateral bond strength equilibrium strategy toward efficient perovskite photovoltaics

Author

Listed:
  • Jike Ding

    (Hebei University of Technology)

  • Yunxiao Liao

    (Hohai University)

  • Hao Liu

    (Hebei University of Technology)

  • Yong Ding

    (Hohai University)

  • Quanxing Ma

    (Hebei University of Technology)

  • Mengjia Li

    (Hebei University of Technology)

  • Zuoling Zhang

    (Hebei University of Technology)

  • Jiajia Zhang

    (Fuyang Normal University)

  • Jian-Xin Tang

    (Macau University of Science and Technology)

  • Jiang Sheng

    (ChangZhou S.C Exact Equipment Co., Ltd)

  • Jiangzhao Chen

    (Kunming University of Science and Technology)

  • Cong Chen

    (Hebei University of Technology
    Macau University of Science and Technology)

Abstract

The NiOx/perovskite interface in p-i-n inverted perovskite solar cells (PSCs) suffers from trap-assisted nonradiative recombination, chemical reactions and weak adhesion. The self-assembled molecules are usually designed to address the above issues. However, absonant bilateral bond strength with NiOx and perovskite hinders the realization of efficient and stable PSCs. Herein, a bilateral bond strength equilibrium strategy is proposed to stabilize the buried interface in inverted PSCs through functional group and spatial conformation engineering. 1-(benzothiaxole-2-ylthio)succnic acid (BTSA) is adsorbed on the surface of NiOx through the S atom, π-ring, and N atom in the benzothiazole, making benzothiazole ring parallel to the NiOx surface, which is beneficial for passivating bilateral defects and improving hole transport. This strategy leads to effective interfacial defect passivation, interfacial chemical reaction suppression and ameliorated electrical properties of NiOx films, enabling 1.53 eV PSCs and large-area module (764 cm2) with a PCE of 26.98% (certified 26.65%) and 21.98%, respectively.

Suggested Citation

  • Jike Ding & Yunxiao Liao & Hao Liu & Yong Ding & Quanxing Ma & Mengjia Li & Zuoling Zhang & Jiajia Zhang & Jian-Xin Tang & Jiang Sheng & Jiangzhao Chen & Cong Chen, 2025. "Stabilizing buried interface by bilateral bond strength equilibrium strategy toward efficient perovskite photovoltaics," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-63389-z
    DOI: 10.1038/s41467-025-63389-z
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