典型文献
Resolving Mixed Intermediate Phases in Methylammonium-Free Sn-Pb Alloyed Perovskites for High-Performance Solar Cells
文献摘要：
The complete elimination of methylammonium(MA)cations in Sn-Pb composites can extend their light and thermal stabili-ties.Unfortunately,MA-free Sn-Pb alloyed perovskite thin films suffer from wrinkled surfaces and poor crystallization,due to the coexist-ence of mixed intermediate phases.Here,we report an additive strat-egy for finely regulating the impurities in the intermediate phase of Cs0.25FA0.75Pb0.6Sn0.4I3 and,thereby,obtaining high-performance solar cells.We introduced d-homoserine lactone hydrochloride(D-HLH)to form hydrogen bonds and strong Pb-O/Sn-O bonds with perovskite precursors,thereby weakening the incomplete complexation effect between polar aprotic solvents(e.g.,DMSO)and organic(FAI)or inor-ganic(CsI,PbI2,and SnI2)components,and balancing their nucleation processes.This treatment completely transformed mixed intermediate phases into pure preformed perovskite nuclei prior to thermal anneal-ing.Besides,this D-HLH substantially inhibited the oxidation of Sn2+species.This strategy generated a record efficiency of 21.61％,with a Voc of 0.88 V for an MA-free Sn-Pb device,and an efficiency of 23.82％for its tandem device.The unencapsulated devices displayed impressive thermal stability at 85℃for 300 h and much improved continuous operation stability at MPP for 120 h.
文献关键词：
中图分类号：
作者姓名：
Zhanfei Zhang;Jianghu Liang;Jianli Wang;Yiting Zheng;Xueyun Wu;Congcong Tian;Anxin Sun;Zhenhua Chen;Chun-Chao Chen
作者机构：
School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 20024,People's Republic of China;Shanghai Synchrotron Radiation Facility(SSRF),Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201800,People's Republic of China
文献出处：
引用格式：
[1]Zhanfei Zhang;Jianghu Liang;Jianli Wang;Yiting Zheng;Xueyun Wu;Congcong Tian;Anxin Sun;Zhenhua Chen;Chun-Chao Chen-.Resolving Mixed Intermediate Phases in Methylammonium-Free Sn-Pb Alloyed Perovskites for High-Performance Solar Cells)[J].纳微快报（英文）,2022(10):178-196
A类：
Methylammonium,stabili,25FA0,75Pb0,6Sn0,4I3,SnI2,Sn2+species
B类：
Resolving,Mixed,Intermediate,Phases,Free,Alloyed,Perovskites,High,Performance,Solar,Cells,elimination,methylammonium,MA,cations,composites,can,extend,their,light,thermal,Unfortunately,free,alloyed,perovskite,thin,films,suffer,from,wrinkled,surfaces,poor,crystallization,due,coexist,ence,mixed,intermediate,phases,Here,report,additive,finely,regulating,impurities,Cs0,thereby,obtaining,high,performance,solar,cells,We,introduced,homoserine,lactone,hydrochloride,HLH,hydrogen,bonds,strong,precursors,weakening,incomplete,complexation,effect,between,polar,aprotic,solvents,DMSO,organic,FAI,inor,CsI,PbI2,components,balancing,nucleation,processes,This,treatment,completely,transformed,into,pure,preformed,nuclei,prior,anneal,Besides,this,substantially,inhibited,oxidation,strategy,generated,record,efficiency,Voc,its,tandem,unencapsulated,devices,displayed,impressive,stability,much,improved,continuous,operation,MPP
AB值：
0.633923
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