摘要：白光LED作为一种新型全固态照明光源，由于其节能环保、体积小、工作寿命长等优点，深受人们的重视。然而，要想实现白光LED照明在现实生活中的广泛应用，就要研制出高效的白光LED用荧光粉。本文通过高温固相法制备了Sr9Mg1.5(PO4)7:Eu3+，Sr9Mg1.5(PO4)7:Ce3+，Sr9Mg1.5(PO4)7:Tb3+三种单掺杂荧光粉与Sr9Mg1.5(PO4)7:Ce3+,Tb3+双掺杂荧光粉。并对其进行了各掺杂浓度的发光强度检测、X射线衍射分析、激发发射光谱分析以及发光色度分析，以此来探究这种新型基质荧光粉的性能指标与实际运用价值。47141

毕业论文关键词：高温固相法；荧光粉；Sr9Mg1.5(PO4)7 

Synthesis and Photoluminescence Properties of Sr9Mg1.5(PO4)7:Ce3+,Tb3+

Abstract：The white LED received people's attention recently as a new type of solid-state lighting, because of its advantages of energy-saving, smart size, long life and so on. However, to achieve white LED lighting is widely used in real life, it is necessary to develop the efficient white LED phosphors. In this paper, Three kinds of single doped phosphor Sr9Mg1.5(PO4)7:Eu3+, Sr9Mg1.5(PO4)7:Ce3+, Sr9Mg1.5(PO4)7:Tb3+ and double doped phosphor Sr9Mg1.5(PO4)7:Ce3+,Tb3+ has been synthesized by high temperature solid state. And carry out the doping concentration of luminous intensity detection, X-ray diffraction (XRD) analysis, stimulates the emission spectrum analysis and luminous colorimetric analysis, to explore the new substrate performance of phosphor and actual application value.

Key Words：High temperature solid state；Phosphors；Sr9Mg1.5(PO4)7

目   录

1 绪论 1

1.1 白光LED 1

1.1.1白光LED概述 1

1.1.2白光LED的基本原理与结构 1

1.2 白光LED用荧光粉 2

1.2.1 荧光粉的分类 2

1.2.2 荧光粉的发光机理 2

1.3稀土掺杂荧光粉的制备方法 3

1.3.1 高温固相法 3

1.3.2 化学沉淀法 3

1.3.3 水热法 4

1.3.4 燃烧法 4

1.3.5 溶胶-凝胶法 4

1.4 研究意义和内容 4

2 实验部分 5

2.1 实验药品 5

2.2 实验设备 5

2.3 测试和分析方法 6

2.3.1 X射线衍射分析（XRD） 6

2.3.2 荧光光谱分析 6

2.3.3 色坐标分析 6

3 Sr9Mg1.5(PO4)7:Eu3+红色荧光粉 6

3.1 引言 6

3.2 样品的制备 7

3.3 XRD分析 7

3.4 荧光光谱分析 8

3.5 掺杂浓度对发光强度的影响 8

3.6 色坐标分析 9

3.7 小结 10

4 Sr9Mg1.5(PO4)7:Tb3+绿色荧光粉 10 Sr9Mg1.5(PO4)7:Ce3+,Tb3+的合成及发光特性的研究:http://www.751com.cn/cailiao/lunwen_49109.html