The effect of zinc ions on the fluorescence spectra of (Ln, Zn)Of : Eu3+(Ln=Y, La and Gd) powder phosphors

Citation
U. Rambabu et al., The effect of zinc ions on the fluorescence spectra of (Ln, Zn)Of : Eu3+(Ln=Y, La and Gd) powder phosphors, SPECT LETT, 33(3), 2000, pp. 423-434
Citations number
20
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
SPECTROSCOPY LETTERS
ISSN journal
00387010 → ACNP
Volume
33
Issue
3
Year of publication
2000
Pages
423 - 434
Database
ISI
SICI code
0038-7010(2000)33:3<423:TEOZIO>2.0.ZU;2-R
Abstract
This research note reports the fluorescence properties of Eu3+-doped in thr ee sets of (Y-Zn, La-Zn and Gd-Zn) oxyfluoride powder phosphors. On excitat ion with a UV-source, these phosphors have displayed orangish-red color and for which the chromaticity coordinates ((X) over bar,(Y) over bar) have be en computed. The relative fluorescence intensity ratios (R) for the differe nt measured emission transitions have been evaluated in order to examine th e effect of substitution of zinc ions in the host matrix on the fluorescenc e behavior. Scanning electron microscopy studies have also been performed t o investigate the average grain size of the synthesized phosphor material.