Origin of High Efficiency and Long-Term Stability in Ionic Liquid Perovskite Photovoltaic

作     者：Lingfeng Chao Tingting Niu Hao Gu Yingguo Yang Qi Wei Yingdong Xia Wei Hui Shouwei Zuo Zhaohua Zhu Chengjie Pei Xiaodong Li Jing Zhang Junfeng Fang Guichuan Xing Hai Li Xiao Huang Xingyu Gao Chenxin Ran Lin Song Li Fu Yonghua Chen Wei Huang 

作者机构：Frontiers Science Center for Flexible ElectronicsXi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi’an 710072China Key Laboratory of Flexible Electronics(KLOFE)&Institution of Advanced Materials(IAM)Nanjing Tech University(Nanjing Tech)Nanjing211816 JiangsuChina Shanghai Synchrotron Radiation FacilityShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physics and Electronic ScienceMinistry of EducationNanophotonics&Advanced Instrument Engineering Research CenterEast China Normal UniversityShanghai 200062China Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacaoMacao SAR 999078China Key Laboratory for Organic Electronics&Information Displays(KLOEID)and Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing210023 JiangsuChina 

出 版 物：《Research》 (研究（英文）)

年 卷 期：2020年第2020卷第1期

页      面：391-403页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：This work was financially supported by the Natural Science Foundation of China(Grants 51972172,61705102,and 91833304) the Natural Science Basic Research Plan in Shaanxi Province of China(2019JM-326) the Young 1000 Talents Global Recruitment Program of China the Fundamental Research Funds for the Central Universities This work also was financially supported by the National Key Research and Development Program of China(grant no.2017YFA0403400) 

主　　题：perovskite bonds breakthrough 

摘      要：Environment-friendly protic amine carboxylic acid ionic liquids(ILs)as solvents is a significant breakthrough with respect to traditional highly coordinating and toxic solvents in achieving efficient and stable perovskite solar cells(PSCs)with a simple one-step air processing and without an antisolvent treatment ***,it remains mysterious for the improved efficiency and stability of PSCs without any passivation ***,we unambiguously demonstrate that the three functions of solvents,additive,and passivation are present for protic amine carboxylic acid *** found that the ILs have the capability to dissolve a series of perovskite precursors,induce oriented crystallization,and chemically passivate the grain *** is attributed to the unique molecular structure of ILs with carbonyl and amine groups,allowing for strong interaction with perovskite precursors by forming C=O…Pb chelate bonds and N-H…I hydrogen bonds in both solution and *** finding is generic in nature with extension to a wide range of IL-based perovskite optoelectronics.