铅卤钙钛矿稳定性增强研究进展

Research Progress in Enhancing Stability of Lead Halide Perovskites

铅卤钙钛矿因其优异的光电性能一直备受关注,如发射波长可调、光谱吸收宽、消光系数大、量子产率高、发射光谱窄等。这些优势使得铅卤钙钛矿成为最具前景的光电材料之一,尤其是在制备发光二极管器件方面已经得到广泛应用,同时在生物医学领域也渐渐展现出非凡的发展潜力。然而,铅卤钙钛矿的形成能较低,其稳定性差,易受环境中水分、氧气、光照、热等因素的影响,造成材料性能退化,甚至发生不可逆的降解。这不仅严重限制了钙钛矿量子点在光电器件的应用,也阻碍了其在生物医学领域的发展。因此,提升钙钛矿量子点的稳定性对推广这类材料的实际应用具有重要意义。本综述旨在介绍铅卤钙钛矿量子点的稳定性研究进展,主要包括对影响其稳定性因素分析以及提升钙钛矿稳定性策略的概述。

Lead halide perovskites have attracted significant attention due to their excellent optoelectronic properties,such as tunable emission wavelength,wide spectral absorption,high extinction coefficient,high quantum yield,and narrow emission spectra.These advantages make lead halide perovskites one of the most promising optoelectronic materials,especially in the preparation of light-emitting diode devices,and gradually demonstrate extraordinary potential in biomedical fields.However,lead halide perovskites have low formation energy and poor stability,and are easily affected by environmental factors such as moisture,oxygen,light,and heat,leading to material degradation and even irreversible degradation.This not only severely limits the application of perovskite quantum dots in optoelectronic devices,but also hinders their development in biomedical fields.Therefore,improving the stability of perovskites is of great significance for promoting the practical application of such materials.This review aims to introduce the research progress on the stability of lead halide perovskite quantum dots,mainly including the analysis of factors affecting their stability and the summary of strategies for enhancing the stability of perovskites.