多元阳离子钙钛矿太阳能电池研究

Research on Multi-Cation Perovskite Solar Cell

近年来,钙钛矿太阳能电池(PSCs)引起了人们极大的兴趣,如何提高钙钛矿太阳能电池效率和稳定性一直是广大学者关注的问题。多元阳离子混合是提升钙钛矿太阳能电池性能的一种新型组合策略。由于FAPbI3的稳定性差,MAPb I3的效率低,而将FA^+、MA^+按一定比例混合制造出的二元阳离子效率、稳定性都得到提升,在此基础上,再加入Cs阳离子,黄色相钙钛矿得到明显抑制。四元混合钙钛矿太阳能电池不仅具有更高的效率和稳定性,而且还表现出其他新特性。结合已有阳离子掺杂的实验基础,整合对比一元、二元、三元和四元阳离子进一步证明:添加更多的阳离子增加钙钛矿材料的复杂性,可以提高PSCs的稳定性和效率。

In recent years,perovskite solar cells(PSCs)have aroused great interest.How to improve the efficiency and stability of perovskite solar cells has been a concern of scholars.Multiple cation mixing is a new combination strategy to improve the performance of perovskite solar cells.Due to the poor stability of FAPbI3 and the low efficiency of MAPbI3,the efficiency and stability of the binary cations produced by mixing FA^+and MA^+at a certain ratio are improved.On this basis,Cs cations are added and the yellow phase perovskite is significantly suppressed.Quaternary hybrid perovskite solar cells not only have higher efficiency and stability,but also show other unexpected new characteristics.Combining the existing experimental foundations of cation doping,the integration and comparison of mono,binary,ternary and quaternary cations further prove that adding more cations to increase the complexity of perovskite materials can improve the stability and efficiency of PSCs.