Eu^2+掺杂UCr4C4-型窄带发射荧光材料的研究进展及应用

Advances in Eu Doped UCrC-type Phosphors with Narrow-band Emissions and Their Applications

近年来,窄带发光材料由于可扩大显示色域、改善色彩重现性、提高发光效率等优点在LED显示领域引起广泛的关注。但由于目前已报道的窄带发射材料较少以及Eu^2+4f-5d跃迁的扩展效应,用于新兴领域的窄带Eu^2+掺杂荧光材料的研发仍然面临巨大挑战。本文综述了目前已报道的具有良好发光性能的Eu^2+激活的UCr4C4型窄带荧光材料,并从结构相关的发光性质出发,分类描述了Eu^2+掺杂的UCr4C4基氮化物、氧化物及氮氧化物荧光材料的晶体结构特征、发光及应用特性,以期望为设计合成新型稀土掺杂的窄带发光材料提供有意义的启示。

In recent years,narrow-band phosphors have attracted widespread attentions in the field of LED display due to the advantages of expanding display color gamut,improving color reproducibility and enhancing luminous efficiency.However,due to the limited number of narrow-band phosphors reported so far and the expansion effect of Eu^2+4 f-5 d transition,the research and development of Eu^2+-doped phosphors with narrow-bands for emerging fields still face huge challenges.This article overviews the currently reported Eu^2+-activated UCr4C4 type phosphors with narrow-band emissions,describes the crystal structure characteristics,photoluminescence properties and their applications of Eu^2+-doped UCr4C4-based nitrides,oxide and oxynitride phosphors,and discusses the structure-related luminescence properties.It is expected that the review could provide meaningful enlightenment for the design of novel rare earth doped emissions.