Transient Interphase Assisted Crystallization of Antisolvent‐Free Perovskite for Enhanced Device Performance
Abstract
ABSTRACT Antisolvent‐free perovskite solar cells (PSCs) are a promising technology for scalable manufacturing. Due to a more complicated crystallization process, a key factor limiting device performance is phase segregation induced by the varying crystallization rates of the various components. Herein, we propose a transient interphase strategy to manipulate the nucleation process and crystal growth for enhanced device performance without an antisolvent. We found that tetramethylurea (TMU) induces instantaneous nucleation with a Cs‐rich component and forms a transient interphase, which balances the integrated crystallization for the formation of α ‐Cs X FA 1−X PbI 3 phase. This approach enhances device performance with an efficiency up to 25.63% and a module efficiency of 19.62%. Crucially, suppressed phase segregation endows exceptional stability: devices show negligible degradation after 1700 h (ISOS‐L‐1) and retain 90% of their initial efficiency after 3500 h. It represents the longest reported MPPT stability for antisolvent‐free Cs X FA 1−X PbI 3 ‐based PSCs to date.
Article Details
Authors (10)
Yongjun Liu
State Key Laboratory of Synergistic Chem-Bio Synthesis, School of Chemistry and Chemical Engineering, New Cornerstone Science Laboratory, Frontiers Science Center for Transformative Molecules, Zhangjiang Institute for Advanced Study and National Center for Translational Medicine
Caiyu Zhong
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan P. R. China
Haoyu Cai
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
Wenjian Shen
Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and Science Xiangyang P. R. China
Biqi He
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
Long Yao
Guodong Liu
School of Materials Science and Engineering
Juan Zhao
Yi‐Bing Cheng
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P.R. China
Jie Zhong