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Bottom-up holistic carrier management strategy induced synergistically by multiple chemical bonds to minimize energy losses for efficient and stable perovskite solar cells

Bottom-up holistic carrier management strategy induced synergistically by multiple chemical bonds to minimize energy losses for efficient and stable perovskite solar cells

作     者:Baibai Liu Ru Li Qixin Zhuang Xuemeng Yu Shaokuan Gong Dongmei He Qian Zhou Hua Yang Xihan Chen Shirong Lu Zong-Xiang Xu Zhigang Zang Jiangzhao Chen Baibai Liu;Ru Li;Qixin Zhuang;Xuemeng Yu;Shaokuan Gong;Dongmei He;Qian Zhou;Hua Yang;Xihan Chen;Shirong Lu;Zong-Xiang Xu;Zhigang Zang;Jiangzhao Chen

作者机构:Key Laboratory of Optoelectronic Technology&Systems(Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China SUSTech Energy Institute for Carbon NeutralityDepartment of Mechanicaland Energy EngineeringSouthern University of Science and TechnologyShenzhen 51855Guangdong China Institute of High Energy PhysicsChinese Academy of Sciences(CAS)Beijing 100049China Chongqing Institute of Green and Inteligent TechnologyUniversity of Chinese Academy of Sciences(UCAS Chongqing)Chinese Academy of SciencesChongqing 400714China Department of ChemistrySoutherm University of Science and TechnologyShenzhen 518055GuangdongChina 

出 版 物:《Journal of Energy Chemistry》 (能源化学(英文版))

年 卷 期:2023年第76卷第1期

页      面:277-287,I0008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:financially supported by the Support Plan for Overseas Students to Return to China for Entrepreneurship and Innovation(cx2020003) the Fundamental Research Funds for the Central Universities(2020CDJ-LHZZ-074) the Natural Science Foundation of Chongqing(cstc2020jcyj-msxm X0629) 

主  题:Perovskite solar cells Bottom-up holistic carrier management strategy Functional group synergistic effect Defect passivation Stress release 

摘      要:The defects from electron transport layer,perovskite layer and their interface would result in carrier nonradiative recombination *** buried interfacial contact is detrimental to charge extraction and device ***,we report a bottom-up holistic carrier management strategy induced synergistically by multiple chemical bonds to minimize bulk and interfacial energy losses for high-performance perovskite photovoltaics.4-trifluoromethyl-benzamidine hydrochloride(TBHCl)containing–CF_(3),amidine cation and Cl^(-)is in advance incorporated into SnO_(2)colloid solution to realize bottom-up *** synergistic effect of multiple functional groups and multiple-bond-induced chemical interaction are revealed theoretically and experimentally.F and Cl^(-)can passivate oxygen vacancy and/or undercoordinated Sn^(4+)defects by coordinating with Sn^(4+).The F can suppress cation migration and modulate crystallization via hydrogen bond with FA^(+),and can passivate lead defects by coordinating with Pb^(2+).The–NH_(2)–C=NH^(+)_(2)and Cl^(-)can passivate cation and anion vacancy defects through ionic bonds with perovskites,*** TBHCl modification,the suppression of agglomeration of SnO_(2)nanoparticles,bulk and interfacial defect passivation,and release of tensile strains of perovskite films are demonstrated,which resulted in a PCE enhancement from 21.28%to 23.40%and improved *** post-treatment,the efficiency is further improved to 23.63%.

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