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, Zhuhua Zhang

Nature Communications   ，2025，16（1），6438

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.

Link: https://www.nature.com/articles/s41467-025-61563-x