张弛,崔瑞瑞,龚新勇,邓朝勇.还原气氛对Sr1.94-xBaxMgSi2O7:Eu2+0.01,Dy3+0.05长余辉材料发光性能的影响[J].光电子激光,2014,(3):501~507 |
还原气氛对Sr1.94-xBaxMgSi2O7:Eu2+0.01,Dy3+0.05长余辉材料发光性能的影响 |
Effects of reducing atmosphere on luminescent properties of persistent luminescence material Sr |
投稿时间:2013-09-03 |
DOI: |
中文关键词: 长余辉材料 还原气氛 发光性能 |
英文关键词:persistent luminescence material reducing atmosphere luminescence properties |
基金项目:贵州省科技计划支持项目(2012-3005,0-4005,9-15,0-2134,1-2016)和贵阳市科技计划(2012101-2-4)资助 项目 (贵州大学 理学院电子科学系,贵州省电子功能复合材料特色重点实验室,贵州 贵阳 550025) |
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中文摘要: |
用高温固相反应法,分别在H2和CO还原气氛 中制备了Sr1.94-xBaxMgSi 2O7:Eu2+0.01,Dy3+0.05长 余辉材料;研究了不同还原气氛对该系列荧光粉发光及余辉性能的影响。研究结果表明,随 着Ba2+浓度的增 加,荧光粉的晶体结构发生了改变,从而导致发射光谱和余辉光谱的峰位也发生了变化;CO 还原气氛下所制备荧光 粉的纯度要高于H2还原气氛下制备的样品,CO还原气氛下所制备荧光粉的余辉的初始亮 度和衰减都明显优于H2还原条件下所制备的样品,说明CO还原条件下更容易形成具有合 适浓度和深度陷阱的纯相荧光粉,有助于提高样品的余辉性能。 |
英文摘要: |
Persistent luminescence material Sr1.94-xBaxMgSi2O 7:Eu2+0.01,Dy3+0.05 was synthesized by solid-state reaction method in hydrogen reducting atmosphere and carbon monoxide reducting a tmosphere,respectively.The impacts of reducing atmosphere on photoluminescence and persistent luminescence properties are studied systematically.The results show that the crystal structures of these phosphors change with the increase of barium ion content,and then the change in crystal structures leads to the shift of the peaks of emission and persistent luminescence spectra.The phosphors synthesized by different reducting methods h ave some differences in crystal structure,photoluminescence and persistent luminescence properties.The phospho rs synthesized in carbon monoxide reducting atmosphere have higher purity than the samples syn thesized in hydrogen reducting atmosphere.What is more,as for persistent luminescence pr operties,the phosphors synthesized in carbon monoxide reducting atmosphere have superior performance in initial lu minance and afterglow decay to the samples synthesized in hydrogen redu cting atmosphe re.This result indicates that it is easier to synthesize pure phase phosphors with the traps which have appropriate concentration and depth by carbon monoxide reducting method and that is good for their persistent luminescence properties. |
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