Eu^(2+)掺杂的卤化物“类”钙钛矿发光材料的研究进展

Eu2+-doped Halide Perovskite(Quasi-)Luminescent Materials and Their Research Progress

卤化物钙钛矿(Halide Perovskites,HPs)发光材料由于其优良的光学性质被广泛应用于多个领域,主要以铅基卤化物钙钛矿为代表,但铅的毒性限制了其应用。寻找无毒或毒性较小的可替换离子已成为近年来的研究热点。稀土离子Eu^(2+)与Pb2+的离子半径相似,且其4f-5d光学跃迁具有优异的发光性质,被认为是替换Pb2+或掺杂在无铅卤化物钙钛矿非常合适的离子。本文综述了Eu^(2+)掺杂卤化物“类”钙钛矿发光材料的不同的制备方法与研究进展,归纳了Eu^(2+)在卤化物“类”钙钛矿材料中的作用机制及发光机制,最后对未来Eu^(2+)掺杂的卤化物“类”钙钛矿发光材料的发展进行了展望,有望为Eu^(2+)掺杂“类”钙钛矿发光材料的进一步研究提供一定的指导作用。

Halide Perovskite(HP)luminescent materials are widely used in many fields due to their excellent optical properties,mainly represented by lead-based halide perovskites.However,the toxicity of lead limits its application.The search for non-toxic or less toxic replaceable ions has become a research hotspot in recent years.The rare earth ion Eu^(2+)has a similar ionic radius to Pb2+,and its 4f-5d optical transition has excellent luminescent properties.It is considered to be a very suitable ion to replace Pb2+or doped in lead-free halide perovskite.In this paper,the different preparation methods and research progress of Eu^(2+)-doped halide perovskite(quasi-)luminescent materials are reviewed.The luminescence mechanism of Eu^(2+)in halide perovskite(quasi-)materials is clarified.Finally,the future development of Eu^(2+)doped halide perovskite(quasi-)luminescent materials is proposed,which is expected to provides some guidance for the further study of Eu^(2+)-doped perovskite(quasi-)luminescent materials.