| Sr3SiO5:Eu2+和Sr3SiO5:Eu2+, Dy3+荧光粉的黄色长余辉性质 |
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| 引用本文： | 孙晓园,张家骅,张霞,骆永石,王笑军.Sr3SiO5:Eu2+和Sr3SiO5:Eu2+, Dy3+荧光粉的黄色长余辉性质[J].发光学报,2008,29(4). |
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| 作者姓名： | 孙晓园 张家骅 张霞 骆永石 王笑军 |
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| 基金项目： | 国家"863"课题
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国家自然科学基金(0774141,10574128)资助项目.Project supported by the MOST of China
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The National Science Foundation of China |
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| 摘 要： | 用高温固相法制备了Sr3SiO5:Eu2 和Sr3SiO5:Eu2 , Dy3 荧光粉.在紫外光辐照后, Sr3SiO5:Eu2 和Sr3SiO5:Eu2 , Dy3 荧光粉具有明亮的黄色长余辉,源于Eu2 的4f65d - 4f7的跃迁.紫外光激发停止后,Sr3SiO5:Eu2 的余辉时间是4 h以上.余辉衰减曲线和热释光曲线说明了引入Dy3 离子可以产生大量的深陷阱和浅陷阱.产生的深陷阱使余辉时间延长到6 h以上.由热释发光曲线,根据热释光的通用级公式拟合了陷阱深度.Sr3SiO5:Eu2 和Sr3SiO5:Eu2 , Dy3 荧光粉是有应用前景的黄色长余辉材料.
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| 关 键 词： | 荧光粉 余辉 热释发光 phosphor phosphorescence thermoluminescence |
Long Lasting Yellow Phosphorescence in Sr3SiO5:Eu2+ and Sr3SiO5:Eu2+, Dy3+ Phosphors |
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| SUN Xiao-yuan,ZHANG Jia-hua,ZHANG Xia,LUO Yong-shi,WANG Xiao-jun.Long Lasting Yellow Phosphorescence in Sr3SiO5:Eu2+ and Sr3SiO5:Eu2+, Dy3+ Phosphors[J].Chinese Journal of Luminescence,2008,29(4). |
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| Authors: | SUN Xiao-yuan ZHANG Jia-hua ZHANG Xia LUO Yong-shi WANG Xiao-jun |
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| Abstract: | Sr3SiO5:Eu2+ and Sr3SiO5:Eu2+, Dy3+ phosphors have been synthesized through the solid-state reaction technique. We observed long lasting yellow phosphorescence in Sr3SiO5:Eu2+ and Sr3SiO5:Eu2+, Dy3+ phosphors, originating from 4f65d-4f7 transition of Eu2+, after UV exposure. The phosphorescence in Sr3SiO5:Eu2+ can be observed by naked eyes for more than 4 hours after the termination of excitation light. The decay patterns of phosphorescence and thermoluminescence curves demonstrate that introduction of Dy3+ into Sr3SiO5:Eu2+ can generate lots of shallow traps and deep traps. The generated deep traps prolong the phosphorescence up to 6 hours after UV irradiation. The depths of traps are obtained by fitting the thermoluminescence experimental data to the general order kinetics formula. |
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| Keywords: | phosphor phosphorescence thermoluminescence |
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