Stretchable alkenamides terminated Ti_(3)C_(2)T_(x)MXenes to release strain for lattice-stable mixed-halide perovskite solar cells with suppressed halide segregation

作     者：Xuemei Yao Jialong Duan Yuanyuan Zhao Junshuai Zhang Qiyao Guo Qiaoyu Zhang Xiya Yang Yanyan Duan Peizhi Yang Qunwei Tang Xuemei Yao;Jialong Duan;Yuanyuan Zhao;Junshuai Zhang;Qiyao Guo;Qiaoyu Zhang;Xiya Yang;Yanyan Duan;Peizhi Yang;Qunwei Tang

作者机构：Institute of Carbon NeutralityCollege of Chemical and Biological EngineeringShandong University of Science and TechnologyQingdaoShandongChina Key Laboratory of Advanced Technique and Preparation for Renewable Energy MaterialsMinistry of EducationYunnan Normal UniversityKunmingYunnanChina College of Mechanical and Electronic EngineeringShandong University of Science and TechnologyQingdaoShandongChina College of Information Science and TechnologyJinan UniversityGuangzhouGuangdongChina School of Materials Science and EngineeringState Centre for International Cooperation on Designer Low-Carbon and Environmental Material(SCICDLCEM)Zhengzhou UniversityZhengzhouHenanChina 

出 版 物：《Carbon Energy》 (碳能源（英文）)

年 卷 期：2023年第5卷第12期

页      面：21-30页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:22109053,22179051,62104136 Special Fund of Taishan Scholar Program of Shandong Province,Grant/Award Number:tsqnz20221141 National Key Research and Development Program of China,Grant/Award Number:2021YFE0111000 Spring City Plan:the High-level Talent Promotion and Training Project of Kunming,Grant/Award Number:2022SCP005 Guangdong Basic and Applied Basic Research Foundation,Grant/Award Number:2020A1515110548 Guangzhou Science and Technology Planning Project,Grant/Award Number:202102020775 

主　　题：all-inorganic perovskite solar cells defect passivation halide segregation stability strain relaxation 

摘      要：Bandgap-tunable mixed-halide perovskite materials have attracted considerable interest because of their indispensability as top counterparts in tandem solar ***,the soft and disordered lattice always suffers from severe phase segregation under illumination,which is particularly susceptible to residual lattice ***,we report a strain regulation strategy by using alkenamides terminated Ti_(3)C_(2)T_(x)MXenes as an additive into perovskite *** from the role of a template for grain growth to obtain high-quality films,the stretchable alkyl chain promotes lattice shrinkage or expansion to form an elastic grain boundary to eliminate the spatially distributed stain and shut down ion migration *** a result,the all-inorganic perovskite solar cells based on CsPbIBr_(2)and CsPbI_(2)Br halides achieve prolonged device stability under harsh conditions and the best power conversion efficiencies up to 11.06%and 14.30%,respectively.