The red-shift of ultraviolet spectra and the relation to optical basicity of Ce-doped alkali rare-earth phosphate glasses

被引:45
作者
Chen, GR [1 ]
Baccaro, S
Nikl, M
Cecilia, A
Du, YXY
Mihokova, E
机构
[1] E China Univ Sci & Technol, Dept Inorgan Mat, Shanghai 200237, Peoples R China
[2] ENEA, FIS, ION, I-00060 Rome, Italy
[3] ASCR, Inst Phys, Prague 16253, Czech Republic
关键词
D O I
10.1111/j.1151-2916.2004.tb07741.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The ultraviolet absorption and emission spectra of Ce3+ doped phosphate glasses based on gadolinium and sodium phosphates are studied in the present work. Compared with the cerium-free phosphate glass matrixes, CePO4 doping shifts the ultraviolet absorption edge of glasses into the longer wavelength because of the 4f-5d absorption transition of Ce3+. The emission spectra correlate such red-shift with glass compositions. Explanations are based on variation in the optical basicity of glasses, which corresponds not only to the alkali content but also to the O/P ratio. The latter is proportional to the number of nonbridging oxygen in the oxyanion unit (PO4), and most likely plays an overwhelming role in the overall optical basicity of glasses.
引用
收藏
页码:1378 / 1380
页数:3
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