铈和铽离子掺杂硼硅酸盐玻璃的发光性能  

LUMINESCENT PROPERTIES OF CERIUM AND TERBIUM ION DOPED BOROSILICATE GLASS

作　　者：程峰[1] 王宝义[2] 王天民[3] 魏龙[2] 

机构地区：[1]兰州大学物理科学与技术学院,兰州730000 [2]中国科学院高能物理研究所,北京100049 [3]北京航空航天大学理学院,北京100083

出　　处：《硅酸盐学报》2008年第7期1018-1021,1026,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(10475096)资助项目

摘　　要：采用传统方法制备了Ce3+和Tb3+掺杂的硼硅酸盐玻璃样品。应用紫外可见分光光度计和荧光光谱仪测试了样品的透过、激发和发射光谱,并测量了Ce3+掺杂玻璃样品在X射线激发下的发射光谱。结果表明:基质玻璃具有很好的透光性能,截止波长约为300nm,适于用作掺杂稀土离子的玻璃闪烁体的基质材料;与基质玻璃相比,Ce3+掺杂玻璃样品的截止波长发生红移;随着Ce3+离子含量的增加,样品的紫外截止波长向长波方向位移;随着基质玻璃光碱度的增加,Ce3+掺杂玻璃样品的激发峰和发射峰发生红移,Stokes位移增大;对于Ce3+和Tb3+共掺杂硼硅酸盐玻璃,存在Ce3+敏化Tb3+发光现象;在X射线激发下,Ce3+掺杂玻璃样品的发射光谱与荧光光谱相似,但发射峰发生红移。Ce^3＋ and Tb^3＋-doped borosilicate glass was prepared by traditional method. The transmission, emission and excitation spectra were measured. The results show that compared with the Ce-free borosilicate glass matrices, Ce^3＋ doping shifts the UV cut-off wavelength of glass into the longer wavelength. The excitation peak wavelength and the emission peak wavelength of Ce^3＋ have an obvious red-shill due to the higher optical basicity of borosilicate glasses than that of phosphate glasses. The luminescence sensitization of Th^3＋ by Ce^3＋ was occurred in Ce^3＋ and Th^3＋ co-doped glasses. Under X-ray excitated, the emission spectra of Ce^3＋ doped glasses are similar to that acquired by fluorescence spectrometer.

关 键 词：铈 铽 硼硅酸盐玻璃 发光性能 闪烁体 

分 类 号：TQ171.73[化学工程—玻璃工业] O482.3[化学工程—硅酸盐工业]