Luminescence of Ce3+ - And Eu2+ - Doped silica glasses under UV and X-ray excitation
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Chewpraditkul W., Shen Y., Chen D., Nikl M., Beitlerova A.
Publisher: INOE Publishing House
Publication year: 2013
Journal: Journal of Optoelectronics and Advanced Materials (1454-4164)
Volume number: 15
Issue number: #
Start page: 94
End page: 98
Number of pages: 5
ISSN: 1454-4164
Languages: English-Great Britain (EN-GB)
Abstract
Ce3+- and Eu2+- doped silica glasses were prepared by impregnation of Ce and Eu ions, respectively, into porous silica glasses followed by high temperature sintering in a CO reducing atmosphere. The characteristic emission band of Ce3+ 5d → 4f transition peaking around 375 nm is observed in the luminescence spectra of Ce3+- doped glass under UV and X-ray excitation. Its photoluminescence decay is governed by several tens of nanoseconds decay time. For Eu2+- doped glass, the Eu2+ 5d → 4f emission band peaking around 430 nm is observed in the luminescence spectra and its photoluminescence decay is governed by a few microseconds decay time. The X-ray excited integral scintillation efficiency of about 82% and 120% of that of the Bi4Ge3O 12(BGO) crystal is obtained, respectively, for the Ce3+- and Eu2+- doped glasses. Scintillation light yield under gamma-ray excitation was also measured and compared with that of the BGO and CeF 3 crystals.
Keywords
Ce3+, Eu2+
Contact Information