Unveiling the surface-interface properties of perovskite crystals and pivotal regulation strategies  

作　　者：Qin Li Ziyu Wang Junjie Ma Mengqi Han Peng Gao Meng Cai Yiqiang Zhang Yanlin Song Shou Peng 

机构地区：[1]Henan Institute of Advanced Technology,College of Chemistry,Zhengzhou University,Zhengzhou 450001,China [2]Key Laboratory of Green Printing,Institute of Chemistry,Chinese Academy of Sciences(ICCAS),Beijing 100190,China [3]China National Building Material Group Co.,Ltd.,Beijing 100036,China [4]State Key Laboratory of Advanced Technology for Float Glass,Beijing 100036,China

出　　处：《Nano Research》2024年第5期3950-3981,共32页纳米研究（英文版）

基　　金：support from the National Key Research and Development(R&D)Program of China(No.2018YFA0208501);the National Natural Science Foundation of China(Nos.62104216,52321006);the Beijing National Laboratory for Molecular Sciences(No.BNLMS-CXXM-202005);the China Postdoctoral Innovative Talent Support Program(No.BX2021271);the Key R&D and Promotion Project of Henan Province(No.192102210032);the Opening Project of State Key Laboratory of Advanced Technology for Float Glass(No.2022KF04);the Joint Research Project of Puyang Shengtong Juyuan New Materials Co.,Ltd.,and the Outstanding Young Talent Research Fund of Zhengzhou University.

摘　　要：Metal-halide perovskite solar cells have garnered significant research attention in the last decade due to their exceptional photovoltaic performance and potential for commercialization.Despite achieving remarkable power conversion efficiency of up to 26.1%,a substantial discrepancy persists when compared to the theoretical Shockley-Queisser(SQ)limit.One of the most serious challenges facing perovskite solar cells is the energy loss incurred during photovoltaic conversion,which affects the SQ limits and stability of the device.More significant than the energy loss occurring in the bulk phase of the perovskite is the energy loss occurring at the surface-interface.Here,we provide a systematic overview of the physical and chemical properties of the surface-interface.Firstly,we delve into the underlying mechanism causing the energy deficit and structural degradation at the surface-interface,aiming to enhance the understanding of carrier transport processes and structural chemical reactivity.Furthermore,we systematically summarized the primary modulating pathways,including surface reconstruction,dimensional construction,and electric-field regulation.Finally,we propose directions for future research to advance the efficiency of perovskite solar cells towards the radiative limit and their widespread commercial application.

关 键 词：perovskite solar cells surface-interface treatment defect modification dimensional design energy regulation heterojunction and homojunction 

分 类 号：O61[理学—无机化学]