Metal-halide perovskites(MHP)are prominent candidates for the new generation of solar cells.The outstanding properties of halide perovskite materials are at the basis of high-performance optoelectronic devices,such as single junction[1]or multi-junction solar cells[2]and light-emitting diodes[3].With a gen-eral structure ABX3,tuning the optoelectronic and structural prop-erties of the perovskite can be done through stoichiometric engineering,e.g.,by varying the type and intermix of the halogen anion on X site(between Br,I,and Cl)and the cation on the A-site(usually methylammonium,formamidinium,and cesium)[4-7].The mixing of halide ions in the perovskite structure is the key that brings versatility to this material[8].However,one of the biggest challenges that commercialization of perovskite-based devices is facing concerns the instability of the perovskite itself[9,10],especially when continuously exposed to oxygen[11,12],humidity[13-15],and illumination[16].And specifically,for MHP with mixed halides,a peculiar process referred to as halide segregation is a significant source of instability[16].

Eduardo G.Machado;Paulo E.Marchezi;Eralci M.Therézio;José Carlos Germino;Rodrigo Szostak;Caique S.de Brito;Yara G.Gobato;Ernesto C.Pereira;Michael F.Toney;Raphael Nagao;Ana Flávia Nogueira

Institute of Chemistry,University of Campinas,Campinas 13083-970 SP,Brazil;Center for Innovation on New Energies,University of Campinas,Campinas 13083-970,SP,Brazil;Institute of Physics,Federal University of Mato Grosso,Cuiaba 78060-900,MT,Brazil;Department of Physics and i3N-Institute for Nanostructures,Nanomodulation and Nanofabrication,University of Aveiro,Aveiro 3810-193,Portugal;Department of Physics,Federal University of Sao Carlos,Sao Carlos 13565-905,SP,Brazil;Department of Chemistry,Federal University of Sao Carlos.Sao Carlos 13565-905,SP,Brazil;Renewable and Sustainable Energy Institute(RASEI),University of Colorado Boulder,Boulder CO 80309,Colorado,United States of America

能源化学

[1]Eduardo G.Machado;Paulo E.Marchezi;Eralci M.Therézio;José Carlos Germino;Rodrigo Szostak;Caique S.de Brito;Yara G.Gobato;Ernesto C.Pereira;Michael F.Toney;Raphael Nagao;Ana Flávia Nogueira-.Light-induced halide segregation in perovskites with wrinkled morphology)[J].能源化学,2022(08):83-88

intermix

Light,induced,segregation,perovskites,wrinkled,morphology,Metal,MHP,are,prominent,candidates,new,generation,solar,cells,outstanding,properties,materials,basis,high,performance,optoelectronic,devices,such,single,junction,multi,light,emitting,diodes,With,eral,structure,ABX3,tuning,structural,done,through,stoichiometric,engineering,by,varying,type,halogen,anion,site,between,Br,Cl,cation,usually,methylammonium,formamidinium,cesium,mixing,ions,key,that,brings,versatility,this,However,biggest,challenges,commercialization,facing,concerns,instability,itself,especially,when,continuously,exposed,oxygen,humidity,illumination,And,specifically,mixed,halides,peculiar,process,referred,significant,source

0.593607