新型空间太阳能电池用的钙钛矿薄膜与器件的电子辐照效应  

Effect of electron irradiation on perovskite films and devices for novel space solar cells

作　　者：罗攀[1,2] 李响 孙学银 谭骁洪[2] 罗俊 甄良[1] Luo Pan;Li Xiang;Sun Xue-Yin;Tan Xiao-Hong;Luo Jun;Zhen Liang(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China;No.24 Research Institute of China Electronics Technology Group Corporation,Chongqing 400060,China)

机构地区：[1]哈尔滨工业大学材料科学与工程学院,哈尔滨150001 [2]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《物理学报》2024年第3期199-208,共10页Acta Physica Sinica

摘　　要：钙钛矿太阳能电池由于具有高效率、低成本、高比功率以及明显优于硅基和Ⅲ-Ⅴ化合物太阳能电池的辐照抗性等优点,被认为是新型空间太阳能电池的有力竞争者之一.目前,人们重点关注钙钛矿太阳能电池的辐照效应,而对核心的钙钛矿薄膜的辐照损伤机理研究较少.本文首先利用蒙特卡罗法模拟预测了钙钛矿太阳能电池的电子辐照效应,然后结合电子辐照前后钙钛矿薄膜的微观组织结构表征和光学/电学性能对比,阐述了薄膜的辐照损伤机理,并对钙钛矿太阳能电池的电子辐照可靠性进行了评价.研究表明,混合阳离子钙钛矿薄膜与太阳能电池表现出优异的电子辐照抗性.即使在累计剂量达5×10^(15)e·cm^(-2)的100 keV电子辐照下,电池依然可保持17.29%的平均能量转换效率,维持了约85%的初始效率水平.本研究为新型空间太阳能电池的抗辐照加固设计提供了理论与实验依据,有助于提高新型空间太阳能电池的服役性能与可靠性.Perovskite solar cells(PSCs)are considered as one of the strong contenders for next-generation space solar cells due to their advantages of high efficiency,low cost,high specific power,and remarkable irradiation resistance compared with those of silicon-based and III-V compound solar cells.At present,one focuses on the irradiation effects of perovskite solar cells,but there are a few studies on the irradiation damage mechanism of the core perovskite film.To advance the spatial application of perovskite solar cells,this study conducts a comprehensive examination of the performance fluctuations exhibited by mixed-cation perovskite films and solar cells under electron irradiation.Initially,the Monte Carlo method is employed to simulate and predict the effect of electron irradiation on perovskite solar cells.Subsequently,in conjunction with the microstructure characterization and the comparison of optical/electrical performance of perovskite films before and after irradiation,the irradiation damage mechanism of film is elucidated and the electron irradiation reliability of perovskite solar cells is evaluated.The research demonstrates that mixed-cation perovskite film and solar cells exhibit outstanding resistance to electron irradiation.Even when exposed to 100 keV electron irradiation with a cumulative fluence of 5×10^(15)e·cm^(-2),the PSCs maintain an average power conversion efficiency of 17.29%,retaining approximately 85%of their initial efficiency.This study provides sound theoretical and experimental evidence for designing the irradiation-resistant reinforcement of new-generation space solar cells,contributing to the improvement of their operational performance and reliability in space applications.

关 键 词：钙钛矿薄膜 钙钛矿太阳能电池 电子辐照 损伤机理 

分 类 号：TM914.4[电气工程—电力电子与电力传动]