铝对掺铽硅基玻璃发光强度的影响

Effect of Al^(3+) on Luminescence Intensity of Tb in Silica Glasses

本文通过溶胶 凝胶方法制备了掺Tb3 + 和Al3 + 的硅基玻璃 ,并研究了Al3 + 对Tb3 + 发光性能的影响 ,结果显示Al3 + 对Tb3 + 的发射峰的位置没明显影响 ,但通过溶胶 凝胶方法掺Al3 + 后 ,所有样品中Tb3 + 的发光强度都明显增加 ,掺 8%～ 10 %的Al3 + 的Tb 硅基玻璃中Tb3 + 的发光强度是不掺Al3 + 的Tb 硅基玻璃中的 5倍。我们推测Tb3 + 和Al3 + 能级之间的关系对于能量传递是比较合适的 ,Al3 + 的作用是更有效地吸收能量并完全地转移给Tb3 + 。

The silica glasses doped with Tb 3+ and Al 3+ inoes was synthesized through Sol Gel process in this paper.The effect of Al 3+ on luminescence properties of Tb 3+ were studied.The results show that no obvious effect of Al 3+ on the emission peak position of Tb 3+ ,but the emission intensity of Tb 3+ doped Al 3+ by sol gel process increased obviously for all samples.The emission intensity of 1% Al-99% SiO 2 glass was 5 times larger than that of 100% SiO 2 glass.We concluded that the relation between the energy levels of Tb 3+ and the energy levels of Al 3+ may be appropriate for the energy transfer,the function of Al 3+ was to absorb efficiently energy and to transfer fully to Tb 3+ .