过渡金属掺杂在钙钛矿光伏器件中的应用

Application of Transition Metal Doping in Perovskite Photovoltaic Devices

钙钛矿太阳能电池在近年发展迅猛,电池效率在几年内连续增长达到2022年认证的25.7%,在光伏器件领域展现出巨大的潜力。尽管钙钛矿太阳能电池具有较高效率,但其热稳定性及湿度稳定性等仍是阻碍其发展的一大屏障。金属离子掺杂被认为是提高钙钛矿光伏器件光电转化性能和稳定性的有效方式之一。其中过渡金属由于其具有多价位等独特性能受到研究人员的青睐。本文综述了近5年采用过渡金属对钙钛矿光伏器件各层进行掺杂修饰的最新研究进展,总结了使用过渡金属离子掺杂钙钛矿太阳能电池的电子传输层、钙钛矿活性层、空穴传输层以及金属电极层的方法和策略,探讨运用此类手段优化钙钛矿光伏器件结构、光电性能及稳定性等参数的规律和机理。

Perovskite solar cells have been rapidly developed in recent years.As of 2022,solar cells based on perovskites have achieved a photoconversion efficiency of 25.7%,showing great potential in the field of photovoltaic devices.Despite their high conversion efficiency,the thermal and humidity stability of perovskite solar cells are still considered major barriers to their development.Metal ion doping has proven to be one of the most effective ways to improve the optoelectrical performance and stability of perovskite solar cells.Among the ions introduced,transition metals have been favored by researchers because of their unique properties such as multivalency.In this paper,the latest advancements of doped perovskite photovoltaic devices with transition metal ions are briefly reviewed,and the methods and strategies of doping against the electron transport layer,perovskite active layer,hole transport layer,and metal electrode layer are summarized.The law and mechanism of such methods used to optimize the structure,photoelectric performance,and stability of perovskite photovoltaic devices are discussed.