光学学报, 2018, 38 (8): 0816002, 网络出版: 2019-05-09
Sn 2+掺杂高Gd2O3硼硅酸盐玻璃的辐照发光性能 下载: 565次
Radioluminescence Properties of Sn
2+-Doped Borosilicate Glass with High Gd2O3
摘要
在还原气氛下制备了Sn
2+掺杂SiO2-B2O3-Gd2O3-La2O3玻璃,并测试了该玻璃的密度、吸收光谱、光致发光、荧光寿命和X射线激发下的辐照发光。研究结果表明,在SiO2-B2O3-La2O3玻璃系统中,随着Sn
2+浓度的增大,紫外吸收截止波长红移, 荧光强度先增大后因浓度淬灭而减小,在Sn
2+浓度为0.3%时达到最大。随着Gd2O3逐渐取代La2O3,玻璃的密度增大,Sn
2+的荧光寿命变短,但未发现Gd
3+对Sn
2+的敏化增强作用。在X射线激发下,Sn
2+的辐照发光强度随着Gd2O3浓度的增大而增大,且不因Gd
3+浓度淬灭而减小,说明在X射线激发下,Gd
3+和Sn
2+之间可能存在能量传递。
Abstract
The Sn
2+-doped SiO2-B2O3-Gd2O3-La2O3 glass is prepared in the reducing atmosphere and its density, absorption spectra, photoluminescence, fluorescence lifetime and radioluminescence excited by X-ray have been tested. The research results show that, in the SiO2-B2O3-La2O3 glass system, with the increase of Sn
2+concentration, the ultraviolet absorption cut-off wavelength is redshifted, and the photoluminescence intensity first increases and then decreases due to the concentration quenching effect, which reaches the maximum at Sn
2+ concentration of 0.3 %. With the replacement of La2O3 by Gd2O3, the glass density increases and the fluorescence lifetime of Sn
2+ gets shorter, but Gd
3+ does not show the sensitizing enhancement effect on Sn
2+. Under the X-ray excitation, the radioluminescence intensity of Sn
2+ increases with the increase of Gd2O3 concentration and does not decreases under the Gd
3+ concentration quenching effect, which indicates that maybe there exists the energy transfer between Gd
3+ and Sn
2+ under the X-ray excitation.
蒋小波, 邹雅, 韩帅, 王聪娟, 陈丹平, 杨秋红. Sn 2+掺杂高Gd2O3硼硅酸盐玻璃的辐照发光性能 [J]. 光学学报, 2018, 38(8): 0816002. Xiaobo Jiang, Ya Zou, Shuai Han, Congjuan Wang, Danping Chen, Qiuhong Yang. Radioluminescence Properties of Sn 2+-Doped Borosilicate Glass with High Gd2O3[J]. Acta Optica Sinica, 2018, 38(8): 0816002.