钙钛矿太阳能电池ABX_3层研究进展

Research Development in ABX_3 Films for Perovskite Based on Solar Cells

有机-无机杂化钙钛矿(ABX_3)太阳能电池光电转化效率自2009年3.8%增长到目前的22.1%,从而获得了基础研究和应用领域科学家的广泛关注。由于钙钛矿材料具有合适且可调的带隙、较强的光吸收、较高的载流子迁移率等优良的光电性能,使其在光电领域的应用更加广泛。本文首先介绍了钙钛矿太阳能电池的发展历程、器件结构的演变过程以及基于钙钛矿太阳能电池ABX_3层材料制备与改进的最新工作进展,并详细综述了对钙钛矿晶体的A位、B位以及X位分别采用不同的离子进行替换、掺杂,发现不同的掺杂工艺对钙钛矿太阳能电池影响各异。此外,我们认为深入研究钙钛矿的相转变和稳定性将有利于获得高效的太阳能电池,有助于理解其工作机理。

The power conversion efficiency （PCE） of organic-inorganic hybrid perovskites solar cells （PSCs）has been rapidly increasing from 3.8% to 22.1%.Solar cells have attracted considerable attention because of their low costing and solution-process as well as high-efficient PCEs. They have been widely applied in photovoltaics owing to their unique properties including the suitable ＆ adjustable band gap, high absorption coefficient and long charge-carrier diffusion length. The development history of PCEs ,the evolution of the device structure, and the latest progress of the ABX3 layers are reviewed.The importance of PCEs by replacement or doping with different cations and anions in ABX3 crystal layers are summarized.The results show that different dopants could enhance the performance and stability of PCEs. Furthermore,it is thought that ABX3 phase transitions and structural stability are also two key points to obtain high efficient PSCs and to further investigate their working mechanisms.