High-throughput compositional mapping of triple-cation tin-lead perovskites for high-efficiency solar cells

作     者：Rajendra Kumar Gunasekaran Jina Jung Sung Woong Yang Jungchul Yun Yeonghun Yun Devthade Vidyasagar Won Chang Choi Chang-Lyoul Lee Jun Hong Noh Dong Hoe Kim Sangwook Lee 

作者机构：School of Materials Science and EngineeringKyungpook National UniversityDaeguRepublic of Korea Advanced Photonics Research Institute(APRI)Gwangju Institute of Science and Technology(GIST)GwangjuRepublic of Korea School of CivilEnvironmental and Architectural EngineeringGreen SchoolKorea UniversitySeoulRepublic of Korea Department of Materials Science and EngineeringKorea UniversitySeoulRepublic of Korea 

出 版 物：《InfoMat》 (信息材料（英文）)

年 卷 期：2023年第5卷第4期

页      面：25-38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] 0805[工学-材料科学与工程（可授工学、理学学位）] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the Korea Electric Power Corporation(Grant number:R20XO02-1) the National Research Foundation of Korea(NRF)funded by the Ministry of Science,ICT(NRF-2019R1A2C1084010) 

主　　题：compositional engineering mixed tin-ead iodides narrow-bandgap perovskites perovskite solar cells strain relaxation ternary phase mapping 

摘      要：Mixed tin-ead perovskites suffer from structural instability and rapid tin oxidation;thus,the investigation of their optimal composition ranges is important to address these inherent *** critical role of triple cations in mixed Sn–Pb iodides is studied by performing a wide range of compositional screenings over mechanochemically synthesized bulk and solution-processed thin films.A ternary phase map of FA(Sn_(0.6)Pb_(0.4))I_(3),MA(Sn_(0.6)Pb_(0.4))I_(3),and Cs(Sn_(0.6)Pb_(0.4))I_(3)is formed,and a promising composition window of(FA_(0.6-x)MA_(0.4)Cs_(x))Sn_(0.6)Pb_(0.4)I_(3)(0≤x≤0.1)is demonstrated through phase,photoluminescence,and stability *** cell performance and chemical stability across the targeted compositional space are investigated,and FA_(0.55)MA_(0.4)Cs_(0.05)Sn_(0.6)Pb_(0.4)I_(3)with strain-relaxed lattices,reduced defect densities,and improved oxidation stability is *** inverted perovskite solar cells with the optimal composition demonstrate a power conversion efficiency of over 22%with an open-circuit voltage of 0.867 V,which corresponds to voltage loss of 0.363 V,promising for the development of narrow-bandgap perovskite solar cells.