Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 178, Issue 3, Pages 218-224Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2012.10.023
Keywords
Rare earth; Oxyfluoride glass; Nano-crystalline glass-ceramic; Photoluminescence spectroscopy; Raman spectroscopy
Funding
- University Grants Commission of India [35-3/2008]
- ICTP, Italy [421.ENEA]
- CICECO, Portugal
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The radiative emission properties of the Dy3+ ions in oxyfluoride glasses and glass ceramics have been investigated for the generation of white light. The X-ray diffraction pattern of the glass ceramics reveals the presence of NaAlSiO4 nanocrystals along with secondary phase of NaY9Si6O26 in the glass matrix after a suitable thermal treatment of the pristine glasses. Intense white light emission has been observed when the samples are excited with 350 nm light. Yellow to blue emission intensity ratios and chromaticity color coordinates have been determined from the visible luminescence spectra. All color coordinates are found to lie in the white region of the chromaticity color diagram proposing the suitability of the present studied materials for color display devices. (C) 2012 Elsevier B.V. All rights reserved.
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