Progress of Pb-Sn Mixed Perovskites for Photovoltaics: A Review  

作　　者：Rajapakshe Mudiyanselage Indrachapa Bandara Shashini M.Silva Cameron C.L.Underwood K.D.G.Imalka Jayawardena Radu A.Sporea S.Ravi P.Silva 

机构地区：[1]Advanced Technology Institute,Faculty of Engineering and Physical Sciences,University of Surrey,Guildford Surrey GU27XH,United Kingdom

出　　处：《Energy & Environmental Materials》2022年第2期370-400,共31页能源与环境材料（英文）

基　　金：R.M.I.B.and S.M.S.gratefully acknowledge support from the University of Surrey scholarships;R.M.I.B.,R.A.S.,C.C.L.U.,and S.R.P.S.also acknowledge funding from EPSRC(EP/R028559/1 and GR/1922310/1);S.M.S.and S.R.P.S acknowledge support SilverRay Ltd.;K.D.G.I.J.and S.R.P.S.gratefully acknowledgefinancial support from the Equality Foundation of Hong Kong.

摘　　要：Pb-Sn mixed perovskites are becoming increasingly popular as narrowbandgap(1.2–1.3 eV)light absorbers in single-junction perovskite solar cells(PSCs)and as bottom cells for all-perovskite tandem solar cells,for highefficiency,low-cost,lightweight,roll-to-roll printable photovoltaic(PV)applications.From the first report of planar Pb:Sn mixed PSCs in 2014,the power conversion efficiencies(PCE)have increased from 10%to 21%by the end of 2020 with an exponential growth in research conducted in this field.Despite much effort,the performance and stability of Pb-Sn mixed PSCs are still limited,which constrains their long-term use in all-perovskite tandem devices.This review highlights the avenues explored in improving different aspects of Pb-Sn mixed PSCs and provides a comprehensive discussion of the interdependent factors affecting the device performance.This includes compositional engineering of the perovskite crystal,absorber layer fabrication and crystallization methods,bandgap tuning,Sn4+reduction,and surface passivation of the absorber layer,as well as the selection of interlayers and electrodes of the final PSC.

关 键 词：inorganic-organic hybrids lead-tin mixed perovskites perovskites photovoltaics solution-processed 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB34[一般工业技术—材料科学与工程]