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摘要绿色长余辉荧光粉SrAl2O4:Eu2+的研究进展摘要：长余辉发光材料是一种可以储存能量的物质，它可以吸收可见光储存能量然后以可见光的形式释放出能量，这种可见光在黑暗中就成为一种长余辉发光。新型高效长余辉发光材料的典型代表以SrAl2O4:Eu2+长余辉发光材料为主。该荧光粉的突出特点是发光强度和余辉持续时间是传统硫化物发光材料的数十倍，而且材料本身没有毒害，也不含任何放射性元素，耐久性和稳定性都特别好，吸光和发光过程可重复低度照明，指示作用良好，既可用于工业、交通领域各种发光仪器、标牌以及各种夜间用品和室内外装饰等，还可应用于矿井坑道、船舶夜航等各种特殊场合设施的低度照明以及应急照明。本论文主要针对于绿色长余辉SrAl2O4:Eu2+荧光粉的研究进展，全面系统地阐述了SrAl2O4:Eu2+荧光粉的发光机理、性能以及制备方法，并且对长余辉荧光粉的发展前景做出了总结。58359
毕业论文关键词：荧光粉，SrAl2O4:Eu2+，制备方法，发光性能
Abstract: Long-lasting light-emitting material is a material that can store energy, it can absorb visible light to store energy and then release energy in the form of visible light, the visible light in the dark becomes a long-lasting light. The SrAl2O4: Eu2+ phosphor is one of the typical new and efficient long-lasting light-emitting materials. Its prominent feature is that the luminous intensity and the afterglow duration is ten times the number of conventional sulfide light emitting materials, and the material itself is not toxic and does not contain any radioactive element; durability and stability are particularly good; light absorbing and emitting processes could repeat low lighting; indicating function is good. They can apply to not only the industry and the transport sector of various light emitting apparatus, signs and various night supplies and interior decoration, etc., but also the low lighting and emergency lighting of mine tunnels, ships and other special occasions night facilities. This paper mainly aims at the progress of green afterglow SrAl2O4:Eu2+ phosphor, comprehensively and systematically expounded its luminescence mechanism, performance and preparation methods, and the development prospects of the long-lasting phosphors was summarized.
Keywords: Phosphors, SrAl2O4:Eu2+, Preparation methods, Luminescent properties
目录
1 长余辉材料的概述 4
2 长余辉材料的发光机理 5
3 长余辉发光材料的类型 5
3.1 硫化物长余辉材料 6
3.2 碱土铝酸盐长余辉材料 6
3.3 硅酸盐长余辉材料 6
3.4 各种长余辉发光材料的性能比较 6
4 长余辉材料的制备方法 8
4.1高温固相反应法 8
4.2 燃烧法 9
4.3 溶胶—凝胶法 10
4.4 共沉淀法 10
4.5 微波合成法 10
5 SrAl2O4:Eu2+,Dy3+荧光粉发光光谱的研究现状 11
6 长余辉材料的发展前景 16
结论 18
参考文献 19
致 谢 20
1 长余辉材料的概述