| 稀土硅酸盐长余辉发光材料的制备及性能 |
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| 引用本文： | 周永强,刘海涛,田一光,尹德武,张景峰,梁晓娟.稀土硅酸盐长余辉发光材料的制备及性能[J].稀有金属材料与工程,2010(Z2). |
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| 作者姓名： | 周永强 刘海涛 田一光 尹德武 张景峰 梁晓娟 |
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| 作者单位： | 温州大学; |
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| 基金项目： | 国家自然科学基金(20771086)资助项目 |
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| 摘 要： | 以SrCO3、CaCO3、4MgCO3·Mg(OH)2·5H2O、SiO2等为原料,用高温固相烧结法合成了发光性能良好的Sr2-xCaxMgSi2O7:Eu2+,Dy3+长余辉发光材料,借助于X射线衍射和荧光光谱等研究手段对其进行了分析和表征,探讨了Ca2+取代Sr2+和稀土离子的掺入量及固相反应温度、时间对其发光性能的影响。结果表明:Sr2-xCaxMgSi2O7:Eu2+,Dy3+长余辉发光材料的较佳烧成温度为1250～1300℃,烧成时间为3h左右;其物相单一,只含有与四方晶系的Sr2MgSi2O7晶相相同的固溶体Sr2-xCaxMgSi2O7相;紫外光和日光均可使其激发发光,随着钙取代锶量的增大,其发射峰逐渐向长波方向移动,发光颜色由蓝绿色变成黄色,但其发光性能变差。钙的取代量为0.5mol以下样品的发光性能良好,余辉时间可达13h以上。
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| 关 键 词： | 硅酸盐 长余辉 发光材料 高温固相烧结法 |
Preparation and Properties of Rare Earth Silicate Long Afterglow Luminescent Materials |
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| Zhou Yongqiang,Liu Haitao,Tian Yiguang,Yin Dewu,Zhang Jingfeng,Liang Xiaojuan.Preparation and Properties of Rare Earth Silicate Long Afterglow Luminescent Materials[J].Rare Metal Materials and Engineering,2010(Z2). |
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| Authors: | Zhou Yongqiang Liu Haitao Tian Yiguang Yin Dewu Zhang Jingfeng Liang Xiaojuan |
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| Affiliation: | Zhou Yongqiang,Liu Haitao,Tian Yiguang,Yin Dewu,Zhang Jingfeng,Liang Xiaojuan (Wenzhou University,Wenzhou 325035,China) |
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| Abstract: | Sr2-xCaxMgSi2O7: Eu2+,Dy3+ long afterglow luminescent materials were synthesized by high temperature solid-state reaction method using SrCO3, CaCO3, 4MgCO3?Mg(OH)2?5H2O, SiO2 as the raw materials. The effect of Ca2+ replacing Sr2+, the mixing amount of rare earth ions, solid state reaction temperature and time on luminescent properties of the materials was discussed. The materials were characterized by X-ray diffraction, fluorescence spectrum and so on. The results show that the better sintering temperature... |
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| Keywords: | silicate long afterglow luminescent materials high temperature solid-state reaction method |
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