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Enhanced emissions in Tb3+-doped oxyfluoride scintillating glass ceramics containing BaF2 nanocrystals

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Authors
Huang, L.
Jia, S.
Li, Y.
Zhao, S.
Deng, D.
Wang, H.
Jia, Guohua
Hua, Y.
Xu, S.
Date
2015
Type
Journal Article

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Huang, L. and Jia, S. and Li, Y. and Zhao, S. and Deng, D. and Wang, H. and Jia, G. et al. 2015. Enhanced emissions in Tb3+-doped oxyfluoride scintillating glass ceramics containing BaF2 nanocrystals. Nuclear Instruments and Methods in Physics Research A. 788: pp. 111-115.
Source Title
Nuclear Instruments and Methods in Physics Research A
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Nanochemistry Research Institute
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Abstract

Transparent Tb3+-doped glass ceramics containing BaF2 nanocrystals were prepared by melt-quenching method with subsequent heat treatment. The XRD and EDS results showed the precipitated crystalline phase in the glass matrix was BaF2. Under 376 nm light, Tb3+ doped oxyfluoride glass ceramics containing BaF2 nanocrystals showed more intense green emission than the as-made glass, and the emission intensity increased with increasing heat treatment temperature and time. The lifetimes of 541 nm emission of Tb3+ doped oxyfluoride glass ceramics were longer than that of as-made glass, which are in the range from 3.00 ms to 3.55 ms. Under X-ray excitation, the green emission was enhanced in the glass ceramics compared to the as-made glass. The results indicate Tb3+ doped oxyfluoride glass ceramics containing BaF2 nanocrystals could be a material candidate for X-ray glass scintillator for slow event detection.