摘要
我们制备了Tm3 +掺杂的不同浓度的MFT玻璃材料 ,在 6 5 0nm激发下观察了Tm3+掺杂的MFT玻璃材料的两个蓝色上转换发光 ,研究了上转换发光的浓度猝灭。实验结果证明这种材料的蓝色上转换荧光的猝灭浓度达到 0 6mol· % ,比其他材料中报道的猝灭浓度高 3倍。研究了Tm3 +离子间的交叉弛豫行为 。
In this work, we have a designation and preparation of MFT glasses for upconversion, the glasses consisted of TeO2 and fluoride: PbF2, AlF3, BaF2, NaF and the impurity Tm2O3. In this glass system the oxide improve forming ability, the fluorides improve the microscopic environment around RE ions in glasses. In this glass host the content of Tm2O3 achieves to 4% mol and crystallization no occurred. A detail study on the concentration quenching of upconversion. luminescence for (1)G(4) --> H-3(6) and D-1(2) --> H-3(4) transitions was completed. The experimental results directed that the quenching concentration was 0.6 mol.% and higher 3 times than in other glasses materials. The cross relaxation and mechanism of concentration quenching were discussed.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2001年第3期287-289,共3页
Spectroscopy and Spectral Analysis
基金
"8 63"国家自然科学基金!(1 980 4 0 1 1 )
计划资助项目!(863 71 5 0 0 3 0 0 1 0 )
"973"国家重点基础研究规划--稀土功能材
