Sn^(2+)掺杂高Gd_2O_3硼硅酸盐玻璃的辐照发光性能  

Radioluminescence Properties of Sn^(2+)-Doped Borosilicate Glass with High Gd_2O_3

作　　者：蒋小波 邹雅 韩帅[2,3] 王聪娟 陈丹平[2] 杨秋红[1] Jiang Xiaobo;Zou Ya;Han Shuai;Wang Congjuan;Chen Danping;Yang Qiuhong(School of Materials Science and Engineering,Shangha~ University,Shanghai 200444,China;Laboratory of High,Power Laser Components,Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]中国科学院上海光学精密机械研究所高功率激光单元技术实验室,上海201800 [3]中国科学院大学,北京100049

出　　处：《光学学报》2018年第8期388-395,共8页Acta Optica Sinica

摘　　要：在还原气氛下制备了Sn^(2+)掺杂SiO_2-B_2O_3-Gd_2O_3-La_2O_3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SiO_2-B_2O_3-La_2O_3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Gd_2O_3逐渐取代La_2O_3,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Gd_2O_3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。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.

关 键 词：材料 Sn2+掺杂 闪烁玻璃 高Gd2O3 能量传递 

分 类 号：TQ171.1[化学工程—玻璃工业]