透明SiO2-Al2O3-CaO-CaF2 微晶玻璃中Tb3+的发光性能研究

人工晶体学报, 2009, 38(2): 321-325.

透明SiO2-Al2O3-CaO-CaF2 微晶玻璃中Tb3+的发光性能研究

顾牡 ^1, , 孙心瑗 ^2, , 黄世明 ^3, , 金鑫杰 ^4, , 刘波 ^5, , 刘小林 ^6, , 倪晨 ^7,

1.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092

2.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092;井冈山大学物理系,吉安,343009

3.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092

4.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092

5.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092

6.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092

7.同济大学物理系,上海市特殊人工微结构材料与技术重点实验室,上海,200092

基金项目: 上海市科委自然科学基金基础性研究项目(05ZR14123) 同济大学优秀人才培养计划国家自然科学基金(50672068;0412003) 上海市科委基础研究重点项目(05JC14062)

关键词： CaF2纳米晶 , 透明微晶玻璃 , 光致发光 , X射线激发发射

Study on the Luminescence Properties of Tb3+ in Transparent SiO2-Al2O3-CaO-CaF2 Glass Ceramic

通过对1.0 mol%Tb2O3掺杂45SiO2-20Al2O3-10CaO-25CaF2玻璃进行热处理制备出透明微晶玻璃,经XRD分析微晶玻璃内析出了大小约为27 nm 的CaF2颗粒.并分别在紫外和X射线激发下研究了Tb3+在基质玻璃和透明微晶玻璃中的发光行为.结果表明:微晶玻璃中CaF2纳米晶颗粒的析出有利于提高Tb3+的发光性能,紫外激发时,Tb3+的545 nm特征发光强度增强了4倍;而X射线激发时,Tb3+的545 nm特征发光强度增加了3.5倍.

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