Paper Title:
Effects of Firing Temperature and Time on the Luminescency of Phosphors in Strontium Aluminate System Co-Doped by Eu2O3 and Dy2O3 and Prepared by Solid State Reaction Processing
  Abstract

In the current study long afterglow phosphors in strontium aluminate system doped with Eu2+ and Dy3+ were synthesized at different firing temperatures for various time. Photoluminescency and crystallisation during sintering under reducing atmosphere were examined as functions of sintering time and temparature. XRD was employed to characterize the crystal phases of phosphors. Scanning electron microscopy (SEM) investigations were carried out to understand surface morphology and to confirm the XRD results. The optical properties of the phosphors were investigated by a phosphorescence spectrophotometer. The changes in emission and excitation spectrum were discussed accounting firing time and temperature.

  Info
Periodical
Edited by
Pietro VINCENZINI and Jean-François BAUMARD
Pages
82-87
DOI
10.4028/www.scientific.net/AST.62.82
Citation
S. Yesilay Kaya, B. Karasu, G. Kaya, E. Karacaoğlu, "Effects of Firing Temperature and Time on the Luminescency of Phosphors in Strontium Aluminate System Co-Doped by Eu2O3 and Dy2O3 and Prepared by Solid State Reaction Processing", Advances in Science and Technology, Vol. 62, pp. 82-87, 2010
Online since
October 2010
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