| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7900282 | Journal of Non-Crystalline Solids | 2018 | 4 Pages |
Abstract
The luminescence and optical absorption of Eu2Â +-doped fluorohafnate glasses in the HfF4-BaF2-LaF3-AlF3-NaF (HBLAN) system have been reported. It is shown that divalent europium does not luminesce in the fluorohafnate glass due to ionization of excited Eu2Â +. The Eu2Â + luminescence appears after heat treatment of the HBLAN glass containing BaCl2. At X-ray excitation of the HBLAN glass the luminescence spectrum has a wide intrinsic band in the region of 250-450Â nm. The substitution of fluorine with chlorine results as a shift both of the intrinsic luminescence band and of the UV absorption edge to the region of the longer wavelengths.
Keywords
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Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
S. Batygov, M. Brekhovskikh, L. Moiseeva, I. Zhidkova, S. Yurtaeva,