稀土掺杂磷酸盐荧光粉的研究进展

Recent Advances of Rare-earth Doped Phosphate Phosphors

荧光粉作为照明和显示器件的重要组成部分,在高显色、低光衰的高品质照明以及宽色域显示器背光源中起着极其关键的作用。随着对光色品质要求的提高,人们对荧光粉性能的要求也越来越高。因此,设计和开发出发光性能优异的新型磷酸盐荧光粉是当务之急。稀土磷酸盐荧光粉具有量子效率高、稳定性良好、能够承受高能量射线和阴极电子束的轰击等优点。近年来,研究者们从基质结构构筑、制备以及光谱调控等方面入手,研究出较多的新型荧光粉。本文分别对几种常见的磷酸盐基质的晶体结构、稀土掺杂磷酸盐荧光粉光色可调和提高二次特性等方面取得的成果等进行介绍,分析了其面临的问题并展望其发展,以期为更多发光性能、二次性能优越的发光和照明显示用的新型磷酸盐荧光粉的设计和制备以及实际应用提供理论指导。

As a key material,the phosphor plays an important role in high-quality lighting with high color rendering and low light attenuation,as well as in backlight source of wide color gamut display.With the development requirements for the light color quality,the performance of phosphors is critical.Therefore,it is urgent to design and develop new phosphate phosphors with excellent luminescent properties.The rare earth doped phosphate phosphor shows many advantages such as low synthesis temperature,high quantum efficiency and good chemical and physical stability.The new phosphors with excellent luminescent properties had been developed by designing the crystal structure of the matrix solid solution,doping activator ion,morphology control and designing core-shell structure.This review provides elaborate descriptions about the structure of several phosphate matrixes,the ways of improving the photoluminescence of the rare-earth doped phosphate phosphors,and the discovery of the recent work.We then pay attention to the problems confronting the current state of the rare-earth doped phosphate phosphors.It is expected to provide theoretical guidance for the design,preparation and practical application of more novel phosphates with excellent luminescence and secondary performance for luminescence and lighting display in this paper.