Tb<sup>3+</sup>掺杂硅酸盐玻璃发光性能的浓度依赖关系

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

Tb³⁺掺杂硅酸盐玻璃发光性能的浓度依赖关系

1.
Laboratory of Waves and Microstructure Materials,Pohl Institute of Solid State Physics,Tongji University,Shanghai 200092,China;
2.
Department of Physics,Jinggangshan University,Ji’an 343009,China

摘要: 利用高温熔融法制备了不同浓度的Tb3+掺杂硅酸盐玻璃，并分别测量了紫外和X射线激发时的发射光谱。光谱结果表明，不同浓度Tb3+掺杂硅酸盐玻璃在紫外和X射线激发时发光行为具有相似的浓度依赖关系：低浓度Tb4O7掺杂时主要以蓝光(5D3→7FJ)发射为主，而高浓度掺杂时以绿光(5D4→7FJ)发射为主。Tb3+发光强度与掺杂浓度的关系分析表明，5D3的浓度猝灭是电偶极-电偶极相互作用引起的, 而5D4的浓度猝灭是交换相互作用引起的。
- Tb3+掺杂硅酸盐玻璃 /
- 光致发光 /
- X射线激发发射 /
- 浓度猝灭 /
- 发光机理Key words：Tb3+-doped silicate glasses /
- photoluminescence /
- X-ray excited luminescence /
- concentration quenching /
- luminescence mechanism
Abstract: A series of concentration-varied Tb3+-doped silicate glasses were synthesized by the melt-quenching process. Photoluminescence and radioluminescence of Tb3+-doped silicate glasses were studied under UV and X-ray excitation, respectively. The similar concentration dependence of Tb3+ luminescence on its dopant concentration was obtained under both UV and X-ray excitation. That is, the blue emission (5D3→7FJ) dominates in the case of low concentration Tb3+-doped silicate glass, while the green one (5D4→7FJ) dominates in high concentration doping. The dependence of the intensity on Tb3+-dopant concentration indicates that the quenching of the 5D3 stat