Preferred Parallel Alignment of Sulfonamide Enables High‐performance Inverted Perovskite Solar Cells
Abstract
Abstract 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 Pb 2+ 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 Pb 2+ 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.
Article Details
Authors (30)
Hailong Huang
Yansen Guo
State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China
Wei Wang
Yanbo Wang
Department of Materials Science and Engineering, City University of Hong Kong
Zewu Feng
State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China
Jianjun Xu
Liver Transplant Center, Union Hospital, Tongji Medical College
Huanyu Zhang
Yi Ji
State Key Laboratory of Catalysis
Le Li
Xueqi Wu
Yitong Liu
Peking-Tsinghua Center for Life Science, Academy for Advanced Interdisciplinary Studies, Peking University
Yige Peng
State Key Laboratory of Bioinspired Interfacial Materials Science Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou China
Xin Li
Yuan Fang
Department of Physics & Astronomy, Extreme Quantum Materials Alliance, Smalley-Curl Institute
Yurou Zhang
Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering
Chaopeng Huang
Zhejiang Baima Lake Laboratory Co., Ltd. Hangzhou China
Siyu Chen
Jinan University ,
Weichang Zhou
School of Physics and Electronics, Hunan Normal University 3 , Changsha 410081,
Dongsheng Tang
Synergetic Innovation Center for Quantum Effects and Application, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education, Key Laboratory for Multifunctional Ionic Electronic Materials and Devices, College of Physics and Electronics, Hunan Normal University , Changsha 410081, Hunan,
Jingsong Sun
Zhejiang Baima Lake Laboratory Co., Ltd. Hangzhou China
Youyong Li
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
Bin Ding
National Key Laboratory of Strength and Structural Integrity, Institute of Solid Mechanics, School of Aeronautic Science and Engineering, Beihang University
Jefferson Zhe Liu
Department of Mechanical Engineering
Klaus Weber
School of Engineering The Australia National University Acton ACT 2601 Australia
Xiang He
Anhui iAmetal New Energy Technology Co.,Ltd
Yi Cui
Nan Hu
Hualin Zhan
School of Engineering The Australia National University Acton ACT 2601 Australia
Xiaohong Zhang
Jun Peng
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry