彭军教授及其合作者在Adv. Energy Mater.上发表论文

作者：

Zewu Feng^1,2, Yanbo Wang¹, Jinzhi Si³, Jianjun Xu¹, Yansen Guo¹, Hailong Huang¹, Yi Ji¹, Huanyu Zhang¹, Le Li¹, Shuilong Kang¹, Xueqi Wu¹, Xin Li¹, Yige Peng¹, Yitong Liu¹, Chenghao Ge¹, Chaopeng Huang², Yurou Zhang², Jingsong Sun², Siyu Chen⁶, Weichang Zhou⁶, Dongsheng Tang⁶, Youyong Li¹, Bin Ding⁵, Jefferson Zhe Liu⁴, Klaus Weber³, Nan Hu⁷, Xiang He⁷, Yi Cui⁷, Hualin Zhan³*, Xiaohong Zhang¹, 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, Australian Capital Territory 2601, Australia.

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

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

⁶School 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.

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

摘要：

Perovskite solar cells (PSCs) hold great promise as the next-generation low-cost photovoltaic technology due to their solution processability; however, this very advantage introduces intrinsic defects and microstructural imperfections, often limiting their performance and stability. Here, 4,4′-oxydibenzenesulfonyl chloride (OBSC), featuring a flexible backbone with two sulfonyl chloride (SO₂Cl) groups, is introduced as a bifunctional molecular additive to simultaneously passivate defects and regulate crystallization in perovskite films. The unique spatial configuration enables multi-site coordination, strongly binding to uncoordinated lead (Pb²⁺) via Pb−O interactions and interacting with formamidinium (FA⁺) through hydrogen bonding, effectively suppressing nonradiative recombination. Concurrently, OBSC stabilizes perovskite-solvent intermediate phases, retarding crystallization kinetics to promote the formation of high-quality films with enlarged grains and reduced trap densities. Consequently, the optimized PSCs demonstrate a champion power conversion efficiency (PCE) of 26.39% (certified 26.03%). Furthermore, the device retains 96% of the initial PCE after 1100 h of continuous one-sun illumination. This work demonstrates the effectiveness of bifunctional additives in simultaneously addressing defects and crystallization issues, presenting a powerful strategy for achieving high-performance, stable perovskite photovoltaics.

影响因子：

26.0

分区情况：

一区

链接：

https://doi.org/10.1002/aenm.202502409