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作者

Jiarong Wang Xian-Yin Dai Leyu Bi Jiaonan Sun Ming Liu Xiaofei Ji Francis R. Lin Qiang Fu Alex K.-Y. Jen

作者单位

⁵Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon 999077, Hong Kong, China ²School of Chemistry and Pharmaceutical Engineering, Shandong First Medical University and Shandong Academy of Medical Sciences, Taian 271016, China ⁷Lead contact ⁶Shanghai Advanced Research Institute, Chinese Academy of Sciences, 99 Haike Road, Zhangjiang Hi-Tech Park, Pudong, Shanghai 201210, China ¹Department of Materials Science and Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong, China ⁴Department of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong, China ³These authors contributed equally

刊名

Joule

年份

2025

卷号

Vol.9 No.10

页码

102105

ISSN

2542-4351

摘要

Perovskite solar cells face challenges with intrinsic instability due to photothermal degradation, primarily through iodine volatilization and lead aggregation. To address this, we have developed a supramolecular β-cyclodextrin derivative ) that offers tri-functional benefits: iodine confinement, lead chelation, and redox-mediated defect healing. This innovative approach uses host-guest interactions to confine iodine, while thiol groups reduce iodine to iodide and oxidize metallic lead to lead ...更多

Perovskite solar cells face challenges with intrinsic instability due to photothermal degradation, primarily through iodine volatilization and lead aggregation. To address this, we have developed a supramolecular β-cyclodextrin derivative ) that offers tri-functional benefits: iodine confinement, lead chelation, and redox-mediated defect healing. This innovative approach uses host-guest interactions to confine iodine, while thiol groups reduce iodine to iodide and oxidize metallic lead to lead ions, facilitating continuous repair of lattice defects. The β-CD- enhances real-time passivation of defects at grain boundaries, significantly improving stability during photothermal aging. Integrated into perovskite films, this derivative achieves improved power conversion efficiencies for inverted PSCs and demonstrates remarkable operational durability. Moreover, it also effectively captures lead to prevent lead leakage and ensures the safer use of PSCs. This strategy is universal for different perovskite components and shows excellent potential in tandem applications.收起

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