Effect of Al3+ 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 Tb3+ and Al3+ inoes 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 Tb5+, 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+.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000165649400017&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701SCI(E)中文核心期刊要目总览(PKU)中国科学引文数据库(CSCD)306803-8062