典型文献
Effect of alloying on the carrier dynamics in high-performance perovskite solar cells
文献摘要：
High-efficiency solar cells often require light absorbers prepared from alloys,such as CdTe1-xSex,CulnxGa1-xSe2,Cu2ZnSnS4-xSex,and(CsxFA1-x)Pb(I1-yBry)3.However,how alloying affects solar cell per-formance is poorly understood,and determining common features associated with alloying is of signifi-cant interest.Herein,we studied the correlation between the A/X site compositional ratio and the photo-generated carrier dynamics using mixed halide perovskites(CsxFA1-x)Pb(lyBr1-y)3 as examples.Nonadiabatic molecular dynamics calculations demonstrated that charge carrier recombination is highly sensitive to the compositional ratio at the A/X-site.The enhanced lifetime is attributable to the suppres-sion of atomic fluctuations,the weakening of electron-phonon coupling,and a reduction in the electron-transition probability between band edges.The optimal Br concentration was determined to be～18％,in agreement with experimental observations.This study not only advances our understanding of why mixed perovskites usually exhibit superior experimental photoelectric properties,but also provides a route for optimizing the carrier lifetimes and efficiencies of perovskite solar cells.
文献关键词：
中图分类号：
作者姓名：
Jing Wang;Wan-Jian Yin
作者机构：
College of Energy,Soochow Institute for Energy and Materials InnovationS(SIEMIS),Soochow University,Suzhou 215006,Jiangsu,China;Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies,Soochow University,Suzhou 215006,Jiangsu,China;Light Industry Institute of Electrochemical Power Sources,Soochow University,Suzhou 215006,Jiangsu,China
文献出处：
引用格式：
[1]Jing Wang;Wan-Jian Yin-.Effect of alloying on the carrier dynamics in high-performance perovskite solar cells)[J].能源化学,2022(05):267-274
A类：
CdTe1,CulnxGa1,CsxFA1,yBry,lyBr1
B类：
Effect,alloying,carrier,dynamics,performance,solar,cells,High,efficiency,often,require,light,absorbers,prepared,from,alloys,such,xSex,xSe2,Cu2ZnSnS4,Pb,I1,However,how,affects,poorly,understood,determining,common,features,associated,signifi,cant,interest,Herein,studied,correlation,between,site,compositional,generated,using,mixed,halide,perovskites,examples,Nonadiabatic,molecular,calculations,demonstrated,that,charge,recombination,highly,sensitive,enhanced,attributable,suppres,sion,atomic,fluctuations,weakening,electron,phonon,coupling,reduction,transition,probability,band,edges,optimal,concentration,was,determined,agreement,experimental,observations,This,study,not,only,advances,our,understanding,why,usually,exhibit,superior,photoelectric,properties,also,provides,route,optimizing,lifetimes,efficiencies
AB值：
0.596339
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
