Stabilization of mixed-halide lead perovskites under light by photothermal effects

作     者：Juvinch R.Vicente Martin E.Kordesch Jixin Chen Juvinch R.Vicente;Martin E.Kordesch;Jixin Chen

作者机构：Department of Chemistry and BiochemistryOhio UniversityAthensOH 45701United States Nanoscale and Quantum Phenomena InstituteOhio UniversityAthensOH 45701United States Department of ChemistryUniversity of the Philippines VisayasMiagaoIloilo 5023Philippines Department of Physics and AstronomyOhio UniversityAthensOH 45701United States 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第12期

页      面：8-11,I0001页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 080501[工学-材料物理与化学] 0827[工学-核科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Nanoscale and Quantum Phenomena Institute (NQPI) National Institutes of Health award number R15HG009972 for support in microscope building and maintenance 

主　　题：Perovskites Phase segregation Photothermal Solar cells LEDs 

摘      要：Mixed-halide lead perovskites(MHLPs) are semiconductor materials with bandgaps that are tunable across the visible spectrum and have seen promising applications in photovoltaics and ***, their segregation into phases with enriched halide components, under resonant light illumination and/or electric field, have hindered their practical applications. Herein, we demonstrate the stabilization of the MHLP photoluminescence(PL) peak as a function of their excitation *** effect is associated with the phase segregation of MHLPs and their subsequent remixing by photothermal heating. We conclude that the balance between these opposing processes dictates the equilibrium PL peak of the MHLPs. The findings in this work could serve as a potential approach to obtain MHLP with stable emission peaks under operating conditions.