Ho3+/Yb3+共掺的SiO2-Al2O3-BaO-BaF2微晶玻璃上转换发光研究 |
| |
引用本文: | 李晨霞,于聪聪,张璞阳,康娟,邓德刚,徐时清.Ho3+/Yb3+共掺的SiO2-Al2O3-BaO-BaF2微晶玻璃上转换发光研究[J].中国激光,2008,35(s2):288-292. |
| |
作者姓名: | 李晨霞 于聪聪 张璞阳 康娟 邓德刚 徐时清 |
| |
作者单位: | 李晨霞:上海理工大学光电信息与计算机工程学院, 上海 200093中国计量学院光学与电子科技学院, 浙江 杭州 310018 于聪聪:中国计量学院光学与电子科技学院, 浙江 杭州 310018 张璞阳:中国计量学院光学与电子科技学院, 浙江 杭州 310018 康娟:中国计量学院光学与电子科技学院, 浙江 杭州 310018 邓德刚:中国计量学院光学与电子科技学院, 浙江 杭州 310018 徐时清:中国计量学院光学与电子科技学院, 浙江 杭州 310018
|
| |
基金项目: | 国家自然科学基金(60508014, 50772102) 和浙江省分析测试科技计划项目(2007F70050)资助课题。 |
| |
摘 要: | 制备了Ho3+/Yb3+共掺的氧氟硅酸盐玻璃, 根据玻璃样品的差热分析进行微晶化处理, 测试了Ho3+/Yb3+共掺微晶玻璃的X射线衍射(XRD)图谱、吸收光谱和上转换发光光谱。结果发现, 在980 nm LD激发下, Ho3+/Yb3+共掺的含BaF2纳米晶的氧氟硅酸盐微晶玻璃可以同时观察到绿光(544 nm)和红光(656, 748 nm)上转换发光, 分别对应于Ho3+ 离子的5F4/5S2→5I8, 5F5→5I8和5F4/5S2→5I7能级跃迁, 与未热处理的玻璃样品相比, 微晶玻璃样品的绿光发光强度增强约347倍。研究结果表明含BaF2纳米晶的氧氟硅酸盐微晶玻璃是一种潜在的上转换基质材料。
|
关 键 词: | 微晶玻璃 上转换发光 X射线衍射 Ho3+ |
Upconversion Luminescence of Ho3+/Yb3+ Codoped SiO2-Al2O3-BaO-BaF2 Glass Ceramics |
| |
Abstract: | Ho3+/Yb3+codoped oxyfluoride silicate glass has been prepared. According to DTA studies, the as-made glass was crystallized. X-ray diffraction (XRD), absorption spectrum and up-conversion luminescence of glass ceramics were measured. The results show: Intense green (544 nm) and red (656 and 748 nm) emissions corresponding to the transitions 5F4/5S2→5I8,5F4/5S2→5I7 and 5F5→5I8 of Ho3+, respectively, were simultaneously observed at room temperature under 980 nm LD excitation. Compared to the as-made glass, the Ho3+ -Yb3+codoped transparent glass ceramics containing BaF2 nanocrystals exhibited highly efficient up-conversion luminescence. Especially, the green emission intensity greatly enhanced about nearly 347 times. The studied results indicate that the oxyfluoride silicate glass ceramics containing BaF2 nanocrystals is a kind of potential luminescence materials for upconversion green lasers. |
| |
Keywords: | glass ceramics upconversion luminescence X-ray diffraction Ho3+ |
|
|