具有蓝绿复合特性荧光粉材料的研制与性能研究
关键词：蓝绿荧光粉；溶液燃烧合成；发光性能
Abstract
BaMgAl10O17 (BAM) is an excellent luminescent substrate with high chemical stability, high luminous efficiency, which makes it outstanding multifunctional material. In this article, Eu and Mn were co-doped in the BAM to acquire the phosphor with blue and green luminescence. Typically, a series of measurement including XRD, SEM and FL were employed to investigate the microstructure, morphology and luminescent property of the as-prepared phosphor. The result indicated that BAM phase was well shaped by solution combustion synthesis at 600℃, which was about 700℃ lower than that with conventional high temperature solid-state reaction. Furthermore, the Eu3 + in the crystal lattice could reduce Eu3 + automatically during the combustion process, which was facile to cause the energy decrease and the cost lower. Furthermore, Mn, Dy, Sr and Ca elements were co-doped into BAM to obtain the significant and effective tailoring spectra. Moreover, the phosphor power fabricated by solution combustion synthesis was well homodispersed, which were facile to be coated.
KeyWords：Blue-green phosphor；Solution Combustion Synthesis；Spectrum Characteristic
目 录
1 绪论 1
1.1 引言 1
1.2 LED灯用荧光粉的发展现状 1
1.3 白光LED用荧光粉的性质 3
1.4 白光LED国内外研究现状及发展前景 3
1.5 荧光材料的分类 4
1.5.1 铝酸盐系列荧光材料 4
1.5.2 硅酸盐系列荧光材料 5
1.5.3 氮化物／氮氧化物系列荧光材料 5
1.5.4 含硫荧光材料 5
1.5.5 其他荧光材料 5
1.6 荧光粉的分类 6
1.6.1 红色荧光粉 6
1.6.2 绿色荧光粉 6
1.6.3 蓝色荧光粉 7
1.7 稀土荧光粉 7
1.7.1 稀土电子管用荧光粉 7
1.7.2 稀土三基色照明用荧光粉 7
1.8 荧光粉的制备方法 8
1.8.1 高温固相反应法 8
1.8.2 燃烧法 8
1.8.3 溶胶－凝胶法 9
1.9 荧光粉发光机理 10
1.10 选题思路 12
1.10.1 荧光粉末的选择 12
1.10.2 粉末制备的选择 12
1.10.3 具体流程思路 12
2 实验部分 13
2.1 实验药品 13
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