Luminescence and microstructure of Sm{sup 2+} ions reduced by x-ray irradiation in Li{sub 2}O-SrO-B{sub 2}O{sub 3} glass
Journal Article
·
· Journal of Applied Physics
- School of Material Engineering, Soochow University, 178 GanJiang East Road, Suzhou 215021 (China)
- Department of Physics, Changwon National University, Changwon 641-773 (Korea, Republic of)
- Department of Photonics, Silla University, Busan 617-736 (Korea, Republic of)
Sm{sup 3+}-doped Li{sub 2}O-SrO-B{sub 2}O{sub 3} glass sample was prepared by the conventional melt quenching method in air atmosphere. Sm{sup 2+} ions in this borate glass were obtained by x-ray irradiation reduction method. The as-prepared and x-ray-irradiated samples were investigated by photoluminescence spectrum and decay curve measurements. The dependence of Sm{sup 2+} luminescence intensity on the x-ray irradiation time was investigated. It is found that the conversion of Sm{sup 3+}{yields}Sm{sup 2+} after x-ray irradiation is efficient in this borate glass. Photostability of Sm{sup 2+} ions was evaluated by the photobleaching method. Furthermore, the induced optical absorption spectrum measurement after x-ray irradiation was performed. Thermoluminescence above room temperature was also studied after x-ray irradiation. The different kinds of defect structures and the reduction mechanism of Sm{sup 2+} ions in this borate glass were discussed. The microstructure of Sm ions in the Li{sub 2}O-SrO-B{sub 2}O{sub 3} glass was suggested. The proposed microstructure would be helpful to understand the reduction mechanism of Sm{sup 2+} ion in borate glasses.
- OSTI ID:
- 21137339
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 11 Vol. 103; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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