卤系钙钛矿纳米晶@多孔材料的制备及应用进展

Advances in the preparation and application of halide perovskite nanocrystals@porous materials

摘要:

卤系钙钛矿纳米晶因其带隙可调，光吸收能力强，载流子迁移率高等特性而被广泛应用于光催化还原、发光二极管、荧光防伪等领域，但其易受环境中水分、氧气、光照等因素的影响从而稳定性变差，这严重制约了其商业化应用。因此，如何提高钙钛矿纳米晶的稳定性已成为近年来的研究热点。利用多孔材料孔道结构对卤系钙钛矿纳米晶进行封装包覆，被认为是提高其稳定性的有效方法。本文首先介绍了卤系钙钛矿纳米晶@多孔材料的结构及特性，其次总结了通过MOFs、COFs、多孔SiO2包覆钙钛矿纳米晶的制备方法及其应用研究，最后，就现阶段卤系钙钛矿纳米晶@多孔材料研究存在的问题及进一步研究方向进行了总结及展望。

Abstract:

Halide perovskite nanocrystals are widely used in fields such as photocatalytic reduction, light-emitting diodes, and fluorescence anti-counterfeiting due to their tunable bandgap, strong light absorption ability, and high carrier mobility. However, their stability is greatly affected by environmental factors such as moisture, oxygen, and light, which severely limits their commercial applications. Therefore, how to improve the stability of perovskite has become a research hotspot in recent years. The encapsulation of halide perovskite nanocrystals using porous material pore structures is considered an effective method to improve their stability. In this article, the structure and characteristics of halide perovskite nanocrystals@porous materials are introduced. In addition, the preparation methods and application research of perovskite nanocrystals coated with MOFs, COFs, and porous SiO2 are summarized . Finally, the existing problems and further research directions in the current research of halide perovskite nanocrystals @ porous materials are put forward.