全无机钙钛矿太阳电池的制备及稳定性

全无机钙钛矿太阳电池因其热稳定性好、载流子迁移率高,可用于制备叠层电池等优点备受关注。随着人们对全无机钙钛矿太阳电池的深入研究和制备工艺的持续优化,全无机钙钛矿太阳电池的光电转换效率已经突破19%。然而,全无机钙钛矿材料相稳定性较差,这使得实现全无机钙钛矿太阳电池在空气环境下制备和长期使用面临巨大挑战。众多科研工作者通过分析全无机钙钛矿材料的相变机制,有针对性地提出了包括添加剂工程、界面工程和开发全无机钙钛矿量子点电池等多种方式来改善全无机钙钛矿太阳电池的长期稳定性。本综述从全无机钙钛矿材料与电池的结构、活性层制备方法和稳定性研究三个方面总结了近年来关于全无机钙钛矿太阳电池的研究进展。

Fabrication and Stability of All-Inorganic Perovskite Solar Cells

The all-inorganic perovskite solar cells(PSCs) have attracted much attention because of their good thermal stability, high carrier mobility and excellent compatibility with tandem devices. With the in-depth study of all-inorganic PSCs and continuous optimization of the fabrication process, the power conversion efficiency of all-inorganic PSCs have exceeded 19%. However, the phase stability of all-inorganic perovskite materials is relatively poor, therefore, the preparation and long-term application of all-inorganic PSCs in the air environment still faces great challenges. By analyzing the phase transition mechanism of all-inorganic perovskite, many researchers have proposed various methods including additive engineering, interface engineering and the development of all-inorganic perovskite quantum dot solar cells to improve their long-term stability. This review summarizes the research progress of all-inorganic PSCs in recent years from the aspects of all-inorganic perovskite materials and structure of solar cells, the fabrication method of the active layer and its phase stability.