Enhanced coordination interaction with multi-site binding ligands for efficient and stable perovskite solar cells

Riming Nie (), Peikun Zhang, Jiaxing Gao, Cheng Wang, Weicun Chu, Luyao Li, Kaiyu Wang, Dongmin Qian, Fanrong Lin, Xuefeng Xia, Yong Wu, Lingfeng Chao, Chunyang Miao, Xiaoming Zhao, Wanlin Guo () and Zhuhua Zhang ()
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Riming Nie: Nanjing University of Aeronautics and Astronautics
Peikun Zhang: Nanjing University of Aeronautics and Astronautics
Jiaxing Gao: Nanjing University of Aeronautics and Astronautics
Cheng Wang: Nanjing University of Aeronautics and Astronautics
Weicun Chu: Nanjing University of Aeronautics and Astronautics
Luyao Li: Shaanxi University of Science & Technology
Kaiyu Wang: Nanjing Tech University (NanjingTech)
Dongmin Qian: Nanjing Tech University (NanjingTech)
Fanrong Lin: Nanjing University of Aeronautics and Astronautics
Xuefeng Xia: 289 Tianxiang Avenue
Yong Wu: Nanjing University of Aeronautics and Astronautics
Lingfeng Chao: Nanjing Tech University (NanjingTech)
Chunyang Miao: Nanjing Tech University (NanjingTech)
Xiaoming Zhao: Nanjing University of Aeronautics and Astronautics
Wanlin Guo: Nanjing University of Aeronautics and Astronautics
Zhuhua Zhang: Nanjing University of Aeronautics and Astronautics

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Conventional passivating ligands bind to perovskite surfaces through only a single active site, which not only creates a resistive barrier due to dense ligand packing but also restricts the enhancement of device stability. Here, we identify an antimony chloride-N,N-dimethyl selenourea complex, Sb(SU)2Cl3, as a multi-anchoring ligand to significantly enhance perovskite crystallinity, suppress defect formation, and dramatically improve moisture resistance and overall stability. As a result, we achieve a power conversion efficiency of 25.03% in fully air-processed perovskite solar cells fabricated using a two-step method—among the highest efficiencies reported for devices prepared under ambient conditions. Remarkably, unencapsulated cells exhibited linear extrapolated T80 lifetimes of 23,325 h during dark shelf storage. Furthermore, these unencapsulated devices demonstrate exceptional thermal and operational stability, with T80 lifetimes of 5,004 (at 85 °C) and 5,209 hours (under 1-sun illumination), respectively, ranking them among the most stable perovskite solar cells to date.

Date: 2025
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DOI: 10.1038/s41467-025-61563-x

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