[Al3+对二氧化硅玻璃中Tb发光强度的影响]

[Effect of Al3+ on luminescence intensity of Tb in silica glasses].

作者信息

Wang X, Wu H, Xie D, Weng S, Wu J

机构信息

Department of Chemistry, Inner Mongolia Normal University, 010022 Hohhot.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2000 Dec;20(6):803-6.

PMID:12938474

Abstract

The silica glasses doped with Tb3+ and Al3+ iones was synthesized through Sol-Gel process in this paper. The effect of Al3+ on luminescence properties of Tb3+ were studied. The results show that no obvious effect of Al3+ on the emission peak position of Tb3+, but the emission intensity of Tb3+ doped Al3+ by sol-gel process increased obviously for all samples. The emission intensity of 1% Al-99% SiO2 glass was 5 times larger than that of 100% SiO2 glass. We concluded that the relation between the energy levels of Tb3+ and the energy levels of Al3+ may be appropriate for the energy transfer, the function of Al3+ was to absorb efficiently energy and to transfer fully to Tb3+.

摘要

本文通过溶胶-凝胶法合成了掺杂Tb³⁺和Al³⁺离子的二氧化硅玻璃。研究了Al³⁺对Tb³⁺发光性能的影响。结果表明，Al³⁺对Tb³⁺的发射峰位置没有明显影响，但通过溶胶-凝胶法掺杂Al³⁺的所有样品中Tb³⁺的发射强度均明显增加。1%Al-99%SiO₂玻璃的发射强度比100%SiO₂玻璃大5倍。我们得出结论，Tb³⁺的能级与Al³⁺的能级之间的关系可能适合能量转移，Al³⁺的作用是有效吸收能量并将其充分转移给Tb³⁺。