典型文献
Reconfiguring perovskite interface via R4NBr addition reaction toward efficient and stable FAPbI3-based solar cells
文献摘要：
Defect states in perovskite films restrict the interfacial stability and open-circuit voltage of perovskite solar cells.Here,aiming at superior interfacial passivation,we investigate the reconfiguration of perovskite interface by the interaction between a series of quaternary ammonium bromides(QAB)and lead-halide(Pb-X)octahedrons.Bromide-iodide substitution reaction or R4NBr addition reaction may occur on the perovskite surface,which is related to the steric hindrance of quaternary ammonium cations.On this basis,the perovskite surface morphology,band structure,growth orientation and defect states are reconstructed via the R4NBr addition reaction.This ordered lead-halide adduct could effectively repair the imperfect perovskite/hole transportation layer interface to suppress non-radiative recombination and ion migration toward ultralong carrier lifetime surpassing 10 us.The resulting perovskite solar cells yield the efficiency of 23.89％with steady-state efficiency of 23.70％.The passivated cells can sustain 86％of initial efficiency after 200-h operation,which is attributed to the passivation effect and hydrophobic char-acteristics.This work provides an avenue for reconfiguring perovskite surface by QABs.
文献关键词：
中图分类号：
作者姓名：
Hongshi Li;Zhenghao Liu;Zijing Chen;Shan Tan;Wenyan Zhao;Yiming Li;Jiangjian Shi;Huijue Wu;Yanhong Luo;Dongmei Li;Qingbo Meng
作者机构：
Laboratory for Renewable Energy(CAS),Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences(CAS),Beijing 100190,China;Institute of New Energy Material Chemistry,School of Materials Science and Engineering,Nankai University,Tianjin 300350,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Songshan Lake Materials Laboratory Dongguan,Guangdong 523808,China
文献出处：
引用格式：
[1]Hongshi Li;Zhenghao Liu;Zijing Chen;Shan Tan;Wenyan Zhao;Yiming Li;Jiangjian Shi;Huijue Wu;Yanhong Luo;Dongmei Li;Qingbo Meng-.Reconfiguring perovskite interface via R4NBr addition reaction toward efficient and stable FAPbI3-based solar cells)[J].中国科学:化学（英文版）,2022(06):1185-1195
A类：
Reconfiguring,R4NBr,octahedrons,QABs
B类：
perovskite,interface,via,addition,reaction,toward,efficient,stable,FAPbI3,solar,cells,Defect,states,films,restrict,interfacial,stability,open,circuit,voltage,Here,aiming,superior,passivation,investigate,reconfiguration,by,interaction,between,series,quaternary,ammonium,bromides,lead,halide,Bromide,iodide,substitution,may,occur,surface,which,related,steric,hindrance,cations,On,this,basis,morphology,band,structure,growth,orientation,defect,are,reconstructed,This,ordered,adduct,could,effectively,repair,imperfect,hole,transportation,layer,suppress,radiative,recombination,migration,ultralong,carrier,lifetime,surpassing,resulting,yield,efficiency,steady,passivated,can,sustain,initial,after,operation,attributed,hydrophobic,char,acteristics,work,provides,avenue,reconfiguring
AB值：
0.576119
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