作者：

Yanbo Wang^1,2, Zewu Feng¹, Yiqing Zhang^2,3, Hailong Huang¹, Yansen Guo¹, Jianjun Xu¹,Huanyu Zhang¹, Yi Ji¹, Le Li¹, Chenghao Ge¹, Chaopeng Huang², Yurou Zhang^2,3, Jingsong Sun²,Yitong Liu¹, Xueqi Wu¹, Xin Li¹, Yige Peng¹, Shuilong Kang¹, Siyu Chen⁷, Weichang Zhou⁷, Dongsheng Tang⁷, Youyong Li¹, Bin Ding⁶, Lianhai Zu⁵, Jefferson Zhe Liu⁴, Klaus Weber³,Xiang He⁸, Nan Hu⁸, Yi Cui⁸, Hualin Zhan³*, Xiaohong Zhang¹, and Jun Peng^1,2*

单位：

¹Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China.

²Zhejiang Baima Lake Laboratory Co., Ltd. Hangzhou, Zhejiang 310000, China.

³School of Engineering, The Australia National University, Acton, ACT 2601, Australia.

⁴Department of Mechanical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia.

⁵Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.

⁶College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.

⁷School of Physics and Electronics, Key Laboratory of Low-dimensional Quantum Structures and Quantum, Control of Ministry of Education, Key Laboratory for Multifunctional Ionic Electronic Materials and Devices of Hunan Normal University, Hunan Province Fundamental Research Center for Quantum Effects and Quantum Technology, Hunan Normal University, Changsha 410081, China.

⁸Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and NanoBionics, Chinese Academy of Sciences, Suzhou 215123, China.

摘要：

The characteristics of perovskite solution processing inherently led to the formation of lattice defects during fabrication, such as lead and iodine vacancies. These defects significantly hinder the efficiency and stability of perovskite solar cells (PSCs), posing a major obstacle to their commercialization. Herein, a bifunctional ligand, N-hydroxymethyl succinimide (NHMS), containing both Lewis base groups (C═O) and proton donor groups (─OH), is introduced to improve the crystal quality of perovskite films and enhance photovoltaic performance. Theoretical calculations and experimental results reveal that NHMS effectively passivates bulk and interfacial defects by coordinating with uncoordinated lead ions (Pb²⁺) and forming hydrogen bonds with iodide or formamidinium ions (I⁻/FA⁺). This dual-site passivation effect effectively reduces trap-assisted recombination. Moreover, the incorporation of NHMS promotes the oriented crystallization of the perovskite, leading to a notable increase in grain size. Consequently, NHMS-treated PSCs achieved a champion power conversion efficiency (PCE) of 26.51% (certified 26.35%), while centimeter-sized PSCs exhibit an impressive PCE of 25.15%. Furthermore, the NHMS-treated device exhibits a remarkable stability for maintaining 95% of its initial efficiency after 1100 h of maximum power point voltage tracking. This work provides comprehensive insights into the application of dual-site passivation to achieve high-performance PSCs.

影响因子：

19.0

分区情况：

一区

链接：

https://doi.org/10.1002/adfm.202510458