Efficient and stable perovskite solar cells by build-inπ-columns and ionic interfaces in covalent organic frameworks

作     者：Riming Nie Xiaokai Chen Zhongping Li Weicun Chu Si Ma Changqing Li Xiaoming Liu Yonghua Chen Zhuhua Zhang Wanlin Guo Riming Nie;Xiaokai Chen;Zhongping Li;Weicun Chu;Si Ma;Changqing Li;Xiaoming Liu;Yonghua Chen;Zhuhua Zhang;Wanlin Guo

作者机构：State Key Laboratory of Mechanics and Control of Mechanical StructuresKey Laboratory for Intelligent Nano Materials and Devices of the Ministry of EducationInstitute for Frontier ScienceNanjing University of Aeronautics and AstronauticsNanjing 210016China Department of Chemical and Biomolecular EngineeringYonsei University50 Yonsei-roSeodaemun-guSeoul 120-749Republic of Korea College of ChemistryJilin UniversityChangchun 130012China Department of Energy and Chemical EngineeringUlsan National Institute of Science and Technology(UNIST)50 UNIST-gilEonyang-eupUljugunUlsan 44919Republic of Korea Key Laboratory of Flexible Electronics(KLoFE)School of Flexible Electronics(Future Technologies)&Institute of Advanced Materials(IAM)Nanjing Tech University(Nanjing Tech)Nanjing 211816China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第7期

页      面：9387-9397页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：This work was supported by the National Natural Science Foundation of China(No.52203359) Fundamental Research Funds for the Central Universities(No.NS2022092) National Key Research and Development Program of China(No.2019YFA0705400) Natural Science Foundation of Jiangsu Province(No.BK20212008) the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures(Nos.MCMS-I-0421K01 and MCMS-I-0422K01) the Fundamental Research Funds for the Central Universities(No.NJ2022002) the National Natural Science Foundation of China(Nos.52073119 and 21774040) A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions 

主　　题：cationic covalent organic framework(C-COF) π-columnar arrays ionic interfaces charge density perovskite solar cells 

摘      要：Perovskite solar cells(PSCs)have attracted much attention due to their rapidly increased power conversion efficiencies,however,their inherent poor long-term stability hinders their *** degradation of PSCs first comes from the degradation of hole transport materials(HTMs).Here,we report the construction of periodicπ-columnar arrays and ionic interfaces over the skeletons by introducing cationic covalent organic frameworks(C-COFs)to the ***π-columnar arrays can optimize the charge transport ability and energy levels of the hole transport layer and suppress the degradation of HTM,and ionic interfaces over the skeletons can produce stronger electric dipole and electrostatic interactions,as well as higher charge *** C-COFs were designed and synthesized via Schiff base reaction by using 1,3,5-triformylphloroglucinol as a neutral knot and dimidium bromide as cationic *** neutral COFs(N-COFs)were also synthesized as a reference by using 3,8-diamino-6-phenylphenanthridine as neutral *** with cationic COF exhibit the highest efficiency of 23.4%with excellent humidity and thermal *** the best of our knowledge,this is the highest efficiency among the meso-structured PSCs fabricated by a sequential process.