Fluorine effects on Sr1.7Mg0.3SiO4:0.01Eu2+, 0.08Mn2+ phosphors for white light-emitting diodes
Fluorine effects on Sr1.7Mg0.3SiO4:0.01Eu2+, 0.08Mn2+ phosphors for white light-emitting diodes
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DOI：
10.1016/j.jlumin.2012.09.006
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发表时间：
2013-02
影响因子：
3.6
通讯作者：
Meiquan Guo;Lihui Huang;Shilong Zhao;Degang Deng;Huanping Wang;Youjie Hua;G. Jia;Shiqing Xu
中科院分区：
文献类型：
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作者：
Meiquan Guo;Lihui Huang;Shilong Zhao;Degang Deng;Huanping Wang;Youjie Hua;G. Jia;Shiqing Xu
采用固相反应法合成了一系列名义组成为Sr1.7M0.3SiO4−xFx：0.01Eu2+，0.08Mn2+（x= 0，0.01，0.05，0.1，0.2）的荧光粉。研究了它们的发光性能。在380 nm光激发下，荧光粉有三个发射带，峰值分别位于455、550和670 nm。掺氟后，荧光粉的晶相变化不大，但发光强度显著增强，色度参数（色坐标、显色指数和色温）也有所改善。系统研究了Sr1. 7Mg0. 3SiO4 −xFx：0. 01Eu2+，0. 08Mn2+荧光粉的色度参数和热猝灭特性，并与商业467 nm激发的YAG：Ce3+荧光粉进行了比较。这些结果表明，优化后的荧光粉可以作为近紫外发光二极管的白色荧光粉。
A series of phosphors with nominal compositions of Sr1.7M0.3SiO4−xFx:0.01Eu2+, 0.08Mn2+(x=0, 0.01, 0.05, 0.1, 0.2) were synthesized through solid-state reaction technique. Their luminescent properties were studied. Three emission bands with peaks at 455, 550 and 670 nm are observed in the phosphors under 380 nm light excitation. When doped with fluorine, the crystal phases of the phosphors were changed slightly, while the luminescent intensities were remarkably enhanced and colorimetric parameters (chromaticity coordinates, color rendering index and color temperature) were improved. The colorimetric parameters and thermal quenching properties of Sr1.7Mg0.3SiO4−xFx:0.01Eu2+, 0.08Mn2+phosphors with the comparison with those of commercial 467 nm stimulated YAG:Ce3+phosphors were systematically investigated. These results indicate that the phosphor with optimized composition could be a promising phosphor as a white light-emitting phosphor for near-ultraviolet light-emitting diodes.