Mixed 2D-Dion–Jacobson/3D Sn-Pb alloyed perovskites for efficient photovoltaic solar devices

作     者：Zhili Lu Chaohui Li Hongwei Lai Xinming Zhou Chunfeng Wang Xianhu Liu Fei Guo Caofeng Pan Zhili Lu;Chaohui Li;Hongwei Lai;Xinming Zhou;Chunfeng Wang;Xianhu Liu;Fei Guo;Caofeng Pan

作者机构：National Engineering Research Center for Advanced Polymer Processing TechnologyKey Laboratory of Advanced Material Processing&Mold(Ministry of Education)Zhengzhou UniversityZhengzhou 450002China Institute of New Energy TechnologyCollege of Information Science and TechnologyJinan UniversityGuangzhou 510632China Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesNational Center for Nanoscience and Technology(NCNST)Beijing 100083China Institute of Materials for Electronics and Energy Technology(i-MEET)Friedrich-Alexander University Erlangen-NürnbergMartensstrasse 7Erlangen 91058Germany 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第2期

页      面：3142-3148页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(No.62174069) Natural Science Foundation of Guangdong Province(No.2020A1515010853) 

主　　题：Sn-Pb perovskite narrow bandgap Dion–Jacobson perovskite solar cells two-dimensional(2D)/three-dimensional(3D) 

摘      要：Tin-lead(Sn-Pb)alloyed perovskites with tunable bandgaps hold great potential for constructing highly efficient single-junction and tandem photovoltaic ***,the efficiency and stability of Sn-Pb perovskite solar cells(PSCs)are greatly hampered by severe nonradiative recombination due to the easy oxidation of Sn(II).In this work,we report the construction of mixed dimensional two-dimensional(2D)Dion–Jacobson(DJ)and three-dimensional(3D)perovskites to improve the efficiency and stability of Sn-Pb alloyed *** a small amount of 1,4-butanediammonium diiodide as spacer cations of DJ perovskites into precursor,the prepared mixed dimensional Sn-Pb alloyed perovskites exhibit reduced trap-state density due to the passivation of 2D DJ *** a result,nonradiative charge recombination is greatly *** prepared Sn-Pb alloyed PSCs based on 2D-DJ/3D heterojunction deliver a power conversion efficiency of 19.02%with an impressive fill factor of 80%.As well,improved device stability is realized due to the presence of DJ perovskites which serves as a protection barrier against oxidation and water invasion.