MXene修饰层对钙钛矿太阳能电池影响研究

Effect of MXene Modification Layer on Perovskite Solar Cells

过渡金属碳化物和氮化物(MXene)作为二维材料家族的新成员,由于具有高导电性、高迁移率、可调结构和表面官能团丰富等优点,引起了广泛关注。该文在电子传输层和钙钛矿光吸收层之间引入Ti3C2Tx(一种典型的MXene)作为界面修饰层,用于制备高性能钙钛矿太阳能电池。结果显示,引入MXene界面修饰层的电池与参比电池相比,钙钛矿晶粒平均尺寸从0.46μm增大至1.16μm,开路电压、短路电流密度和填充因子均有提升,光电转换效率从15.78%提升到19.39%,证明引入MXene界面修饰层是提高钙钛矿太阳能电池性能的一种有效方法。

MXenes,a new and intriguing family of two-dimensional(2 D)materials,have recently attracted considerable attention owing to their excellent properties such as high electrical conductivity and mobility,tunable structure,and termination groups.In this study,Ti3C2Tx(a typical MXene material)was incorporated as an interface modification layer between the electronic transport layer and the perovskite absorber layer of perovskite solar cells,with the aim of efficiency enhancement.Results show that the average grain size of the perovskite increased from 0.46 to 1.16μm after the introduction of Ti3C2Txcompared with the pristine sample,and the power conversion efficiency was improved from 15.78%to 19.39%.This work brings opportunities for the research of MXene as potential materials in high-performance perovskite solar cells.