Paper Title:

Influences of Eu2+ and Dy3+ Contents on the Properties of Long Afterglow Strontium Aluminate Phosphors

Periodical Advances in Science and Technology (Volume 62)
Main Theme 12th INTERNATIONAL CERAMICS CONGRESS PART A
Edited by Pietro VINCENZINI and Jean-François BAUMARD
Pages 88-94
DOI 10.4028/www.scientific.net/AST.62.88
Citation Selvin Yesilay Kaya et al., 2010, Advances in Science and Technology, 62, 88
Online since October, 2010
Authors Selvin Yesilay Kaya, Bekir Karasu, Guray Kaya, Erkul Karacaoğlu
Keywords Long Afterglow, Phosphor, Photoluminescence (PL), Solid State Reaction, Strontium Aluminate
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Abstract

The detailed preparation process of Eu2+ and Dy3+ ion co-doped phosphor powders in Sr4Al14O25:Eu2+/Dy3+ phosphor system with bluish-green long afterglow produced by solid state reaction method under reducing atmosphere is here reported. X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size analysis were made to assign the effects of Eu and Dy ions on the luminescent properties of the synthesized phosphors, which were determined by measuring the photoluminescence spectra. The maximum emission intensity of these phosphors under excitation was investigated. As a result, the relevant values were obtained from the phosphorescent pigment with 0.21% and 0.05% molar percent of Eu2+ and Dy3+.