纳米金属氧化物在钙钛矿电池中的应用研究进展

Recent Progress on Applications of Nano Metal Oxides in Perovskite Solar Cells

近几年来,钙钛矿电池发展迅速,其单电池效率从最初的3.8%迅速提升至目前20.1%,接近硅基太阳能电池的光电转换效率。TiO_2、ZnO、Al_2O_3等诸多无机纳米金属氧化物材料作为重要的载流子输运材料与钙钛矿生长骨架也被广泛地应用于钙钛矿电池。依据钙钛矿电池功能结构的差异,本文分别介绍了此类材料作为钙钛矿电池中的致密层及介孔层的制备方法,并在此基础上介绍了基于表面修饰、掺杂、复合等氧化物的改性手段调节材料理化性能与氧化物/钙钛矿界面特性,进而改进钙钛矿电池性能的方法。并阐述了进一步提高钙钛矿电池光电转换效率需要关注的重点问题及展望。

In recent years, the power conversion efficiency of perovskite solar cells （PSCs） has increased dramati- cally from 3.8% to 20.1%, approaching to that of recent silicon-based solar cells. Inorganic metal oxides, including TiO2, ZnO, Al2O3, etc., have been widely used as charge transport layers and perovskite supporting scaffords in PSCs. Regarding the cell structures of PSCs, this review discusses the syntheses methods of inorganic compact layers and mesoporous layers made from these inorganic metal oxides, and the modifications （including surface modi-fications, doping and composites） of these inorganic functional layers, which aim at improving the charge transport properties of these layers and changing the interracial characteristics with perovskites to enhance the PSCs＇ cell performances. Besides, the important issues of such functional layers made from inorganic metal oxides are also discussed.