Nie Riming, Zhang Peikun, Gao Jiaxing, Wang Cheng, Chu Weicun, Li Luyao, Wang Kaiyu, Qian Dongmin, Lin Fanrong, Xia Xuefeng, Wu Yong, Chao Lingfeng, Miao Chunyang, Zhao Xiaoming, Guo Wanlin, Zhang Zhuhua
State Key Laboratory of Mechanics and Control for Aerospace Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, and Institute for Frontier Science, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China.
School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an, P. R. China.
Nat Commun. 2025 Jul 11;16(1):6438. doi: 10.1038/s41467-025-61563-x.
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)Cl, 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 T lifetimes of 23,325 h during dark shelf storage. Furthermore, these unencapsulated devices demonstrate exceptional thermal and operational stability, with T 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.
传统的钝化配体仅通过单个活性位点与钙钛矿表面结合，这不仅由于配体密集堆积而形成电阻势垒，还限制了器件稳定性的提高。在此，我们确定了一种氯化锑 - N,N - 二甲基硒脲配合物Sb(SU)Cl作为多锚定配体，可显著提高钙钛矿结晶度、抑制缺陷形成，并显著提高耐湿性和整体稳定性。结果，在使用两步法制备的全空气处理钙钛矿太阳能电池中，我们实现了25.03%的功率转换效率，这是在环境条件下制备的器件所报道的最高效率之一。值得注意的是，未封装的电池在黑暗货架储存期间表现出23,325小时的线性外推T寿命。此外，这些未封装的器件表现出出色的热稳定性和操作稳定性，T寿命分别为5,004小时（在85°C下）和5,209小时（在1个太阳光照下），使其成为迄今为止最稳定的钙钛矿太阳能电池之一。
