彭军教授及其合作者在Adv. Mater.上发表论文

作者：

Hailong Huang^1,2, Yansen Guo¹, Wei Wang³, Yanbo Wang¹, Zewu Feng¹, Jianjun Xu¹, Huanyu Zhang¹, Yi Ji¹, Le Li¹, Xueqi Wu¹, Yitong Liu¹, Yige Peng¹, Xin Li¹, Yuan Fang, Yurou Zhang², Chaopeng Huang², Siyu Chen⁴, Weichang Zhou⁴, Dongsheng Tang⁴, Jingsong Sun², Youyong Li¹, Bin Ding⁵, Jefferson Zhe Liu⁶, Klaus Weber³, Xiang He⁷, Yi Cui⁷, Nan Hu⁷, Hualin Zhan³*, Xiaohong Zhang¹, and Jun Peng^1,2*

单位：

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

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

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

⁴School 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

⁵College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123 China

⁶Department of Mechanical Engineering, The University of Melbourne, Parkville, VIC, 3010 Australia

⁷Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and NanoBionics, Chinese Academy of Sciences, Suzhou, 215123 China

摘要：

Molecule additives emerge as a highly effective strategy for enhancing the performance and stability of perovskite solar cells (PSCs), owing to their potential in suppressing intrinsic defects in perovskite. However, the influence of atomic configuration and electronic properties of additives on their passivation performance receives little attention. Here, two benzenesulfonamide derivatives, 4-carboxybenzenesulfonamide (CO-BSA) and 4-cyanobenzenesulfonamide (CN-BSA) are investigated, examining the effects of molecules with different electron‑acceptor functional groups on the defect passivation of perovskite layer and the photovoltaic properties of perovskite solar cells (PSCs. It is found that CN‑BSA and CO‑BSA preferentially adopt parallel-aligned binding orientations within the perovskite, enabling strong coordination to two neighboring undercoordinated Pb²⁺ defect sites. Meanwhile, CO‑BSA exhibits a more favorable electronic configuration than CN‑BSA, which endows the functional groups with a higher electron density that enables stronger dual-site binding with uncoordinated Pb²⁺ defects. Moreover, incorporating CO-BSA promotes the formation of perovskite films with large grain sizes, high quality, and low defect densities. Consequently, the device modified with CO-BSA achieves an efficiency of 26.53% (certified 26.31%). The encapsulated CO-BSA-based cell retains 96.1% of its initial efficiency after 1100 h of steady-state power output (SPO) measurement in air.

影响因子：

27.4

分区情况：

一区

链接：

https://doi.org/10.1002/adma.202507918