典型文献
Defect Passivation on Lead-Free CsSnI3 Perovskite Nanowires Enables High-Performance Photodetectors with Ultra-High Stability
文献摘要：
In recent years,Pb-free CsSnI3 perovskite materials with excel-lent photoelectric properties as well as low toxicity are attracting much atten-tion in photoelectric devices.However,deep level defects in CsSnI3,such as high density of tin vacancies,structural deformation of SnI6-octahedra and oxidation of Sn2+states,are the major challenge to achieve high-performance CsSnI3-based photoelectric devices with good stability.In this work,defect pas-sivation method is adopted to solve the above issues,and the ultra-stable and high-performance CsSnI3 nanowires(NWs)photodetectors(PDs)are fabricated via incorporating 1-butyl-2,3-dimethylimidazolium chloride salt(BMIMCl)into perovskites.Through materials analysis and theoretical calculations,BMIM+ions can effectively passivate the Sn-related defects and reduce the dark cur-rent of CsSnI3 NW PDs.To further reduce the dark current of the devices,the polymethyl methacrylate is introduced,and finally,the dual passivated CsSnI3 NWPDs show ultra-high performance with an ultra-low dark current of 2×10-11 A,a responsivity of up to 0.237 A W-1,a high detectivity of 1.18×1012 Jones and a linear dynamic range of 180 dB.Furthermore,the unpackaged devices exhibit ultra-high stability in device performance after 60 days of storage in air(25℃,50％humidity),with the device performance remaining above 90％.
文献关键词：
中图分类号：
作者姓名：
Zheng Gao;Hai Zhou;Kailian Dong;Chen Wang;Jiayun Wei;Zhe Li;Jiashuai Li;Yongjie Liu;Jiang Zhao;Guojia Fang
作者机构：
International School of Microelectronics,Dongguan University of Technology,Dongguan 523808,Guangdong,People's Republic of China;Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China,School of Physics and Technology,Wuhan University,Wuhan 430072,People's Republic of China;Faculty of Physics and Electronic Science,Hubei University,Wuhan 430062,People's Republic of China
文献出处：
引用格式：
[1]Zheng Gao;Hai Zhou;Kailian Dong;Chen Wang;Jiayun Wei;Zhe Li;Jiashuai Li;Yongjie Liu;Jiang Zhao;Guojia Fang-.Defect Passivation on Lead-Free CsSnI3 Perovskite Nanowires Enables High-Performance Photodetectors with Ultra-High Stability)[J].纳微快报（英文）,2022(12):481-490
A类：
CsSnI3,SnI6,Sn2+states,dimethylimidazolium,BMIMCl,BMIM+ions,NWPDs,unpackaged
B类：
Defect,Passivation,Lead,Free,Perovskite,Nanowires,Enables,High,Performance,Photodetectors,Ultra,Stability,In,recent,years,Pb,free,materials,excel,lent,photoelectric,properties,well,low,toxicity,are,attracting,much,atten,devices,However,deep,level,defects,such,high,density,vacancies,structural,deformation,octahedra,oxidation,major,challenge,achieve,performance,good,stability,this,work,method,adopted,solve,above,issues,ultra,stable,nanowires,NWs,photodetectors,fabricated,via,incorporating,butyl,chloride,salt,into,perovskites,Through,analysis,theoretical,calculations,effectively,related,reduce,dark,To,further,current,polymethyl,methacrylate,introduced,finally,dual,passivated,show,responsivity,up,detectivity,Jones,linear,dynamic,range,dB,Furthermore,exhibit,after,days,storage,air,humidity,remaining
AB值：
0.520628
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