Constructing low-dimensional perovskite network to assist efficient and stable perovskite solar cells

作     者：Jinwen Gu Xianggang Sun Pok Fung Chan Xinhui Lu Peng Zeng Jue Gong Faming Li Mingzhen Liu 

作者机构：School of Materials and EnergyUniversity of Electronic Science and Technology of ChinaChengdu 611731SichuanChina Department of PhysicsThe Chinese University of Hong Kong Shatin999077Hong KongChina Sichuan University-Pittsburgh InstituteSichuan UniversityChengdu 610065China State Key Laboratory Electronic Thin Film and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengdu 611731SichuanChina 

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

年 卷 期：2024年第96卷第9期

页      面：625-632页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：supported by the National Key Research and Development Program of China(2022YFB4200301) the National Natural Science Foundation of China(52202216) the Natural Science Foundation of Sichuan Province(24NSFSC1601) 

主　　题：Low-dimensional perovskite Network Carrier transport Perovskite solar cell Stability 

摘      要：The use of low-dimensional(LD)perovskite materials is crucial for achieving high-performance perovskite solar cells(PSCs).However,LD perovskite films fabricated by conventional approaches give rise to full coverage of the underlying 3D perovskite films,which inevitably hinders the transport of charge carriers at the interface of ***,we designed and fabricated LD perovskite structure that forms net-like morphology on top of the underlying three-dimensional(3D)perovskite bulk *** net-like LD perovskite not only reduced the surface defects of 3D perovskite film,but also provided channels for the vertical transport of charge carriers,effectively enhancing the interfacial charge transfer at the LD/3D *** net-like morphological design comprising LD perovskite effectively resolves the contradiction between interfacial defect passivation and carrier extraction across the ***,the net-like LD perovskite morphology can enhance the stability of the underlying 3D perovskite film,which is attributed to the hydrophobic nature of LD *** a result,the net-like LD perovskite film morphology assists PSCs in achieving an excellent power conversion efficiency of up to 24.6%with over 1000 h long-term operational stability.