CsSn_(0.5)Ge_(0.5)I_(3)钙钛矿太阳电池性能的仿真研究  

Performance Simulation Study of CsSn_(0.5)Ge_(0.5)I_(3) Perovskite Solar Cell

作　　者：余首柘 涂洁磊[1] 李雷[1] 肖祥江[1] 徐伟燕 吴佳豪 吴昊 谢雨岑 杨艳云 YU Shouzhe;TU Jielei;LI Lei;XIAO Xiangjiang;XU Weiyan;WU Jiahao;WU Hao;XIE Yucen;YANG Yanyun(Yunnan Provincial Key Laboratory of Rural Energy Engineering,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学云南省农村能源工程重点实验室,云南昆明650500

出　　处：《云南师范大学学报（自然科学版）》2022年第5期1-6,共6页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(61664010)。

摘　　要：采用一维太阳电池模拟软件SCAPS-1D系统探究了FTO/TiO_(2)/CsSn_(0.5)Ge_(0.5)I_(3)/Cu_(2)O/Au太阳电池中钙钛矿吸收层厚度、缺陷密度以及ETL/perovskite和perovskite/HTL界面层缺陷密度对电池性能的影响.结果表明:钙钛矿吸收层厚度过薄不利于材料对光的充分吸收,过厚增加薄膜的缺陷密度,均会导致太阳电池的光电转换效率降低;不同界面层缺陷密度对器件性能有不同影响.通过优化,当吸收层厚度为800 nm,缺陷密度为1×10^(15) cm^(-3),ETL/perovskite和perovskite/HTL界面层缺陷密度分别为1×10^(15) cm^(-3)和1×10^(16) cm^(-3)时,器件可取得25.43%的光电转换效率.The one-dimensional solar cell simulation software SCAPS-1D was used to systematically explore the effects of thickness and defect density of perovskite absorber layer together with defect density of ETL/perovskite,perovskite/HTL interface layers on the performance of FTO/TiO_(2)/CsSn_(0.5)Ge_(0.5)I_(3)/Cu_(2) O/Au solar cells.The results show that if the thickness of the perovskite absorber layer is too thin,it is not conducive to the sufficient absorption of light by the material,and if the thickness is too thick,it increases the defect density of the film.Both of the above conditions can degrade cells performance.Also,defects density of different interface layers have different effects on device performance.Through optimization,when the thickness of the absorber layer is 800 nm,the defect density is 1×10^(15) cm^(-3),and the defect density of the ETL/perovskite and perovskite/HTL interface layers are 1×10^(15) cm^(-3) and 1×10^(16) cm^(-3) respectively,the device can obtain a power conversion efficiency of 25.43%.

关 键 词：钙钛矿太阳电池 SCAPS-1D 吸收层厚度 界面缺陷 

分 类 号：TM914.4[电气工程—电力电子与电力传动]