典型文献
Hydrophobic long alkyl chain organic cations induced 2D/3D heterojunction for efficient and stable perovskite solar cells
文献摘要：
Designing post-formed two-dimensional(2D)perovskite on the surface of three-dimensional(3D)per-ovskite with matched energy levels and high stability is crucial for improving the performance and sta-bility of perovskite solar cells(PSCs).Herein,a long alkyl chain dodecylammonium bromide(DABr)was applied to react with excessive lead iodide(PbI2)on the grain boundary of metal halide perovskite pref-erentially,forming DA2PbI4(n=1)to constitute a clear 2D/3D heterojunction.The existence of hetero-junction increases the intensity of the built-in electric field of the device to enhance carrier separation and extraction,and the amino group of dodecylammonium cation passivates defects,which jointly con-tribute to the improvement of the power conversion efficiency(PCE)from 20.35 to 21.81％.The long alkyl chain endows the 2D perovskite with good hydrophobic properties,improving the humidity and thermal stability of the device.The unencapsulated device can maintain 64％of its initial efficiency after 1065 h storage in ambient air.
文献关键词：
中图分类号：
作者姓名：
Xiang He;Min Wang;Fengren Cao;Wei Tian;Liang Li
作者机构：
School of Physical Science and Technology,Center for Energy Conversion Materials and Physics,Jiangsu Key Laboratory of Thin Films,Soochow University,Suzhou 215006,China
文献出处：
引用格式：
[1]Xiang He;Min Wang;Fengren Cao;Wei Tian;Liang Li-.Hydrophobic long alkyl chain organic cations induced 2D/3D heterojunction for efficient and stable perovskite solar cells)[J].材料科学技术（英文版）,2022(29):243-251
A类：
dodecylammonium,DABr,erentially,DA2PbI4
B类：
Hydrophobic,long,alkyl,chain,organic,cations,induced,2D,heterojunction,efficient,stable,perovskite,solar,cells,Designing,post,formed,two,dimensional,surface,three,matched,energy,levels,high,stability,crucial,improving,performance,PSCs,Herein,bromide,was,applied,react,excessive,lead,iodide,PbI2,grain,boundary,metal,halide,pref,forming,constitute,clear,existence,increases,intensity,built,electric,field,device,enhance,carrier,separation,extraction,amino,group,passivates,defects,which,jointly,tribute,improvement,power,conversion,efficiency,PCE,from,endows,good,hydrophobic,properties,humidity,thermal,unencapsulated,can,maintain,its,initial,after,storage,ambient,air
AB值：
0.581831
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