Persistent luminescence and thermoluminescence of UV/VIS -irradiated SrAl<inf>2</inf>O<inf>4</inf>: Eu<sup>2+</sup>, Dy<sup>3+</sup> phosphor

C. Pereyda-Pierre, R. Meléndrez, R. García, M. Pedroza-Montero, M. Barboza-Flores

Research output: Contribution to conferencePaper

8 Scopus citations

Abstract

The persistent luminescence and thermoluminescence properties of SrAl 2O4: Eu2+, Dy3+ phosphors excited with UV-VIS light in the 200-500 nm region were investigated. The thermoluminescence glow curve was found to be composed of peaks around 70, 125 and 245 °C. The persistent luminescence and thermoluminescence excitation spectra exhibited a broad band around 300-500 nm centered at 400 and 420 nm respectively. A linear behavior of the integrated thermoluminescence intensity and persistent luminescence versus irradiation time was found for the first 60 s. The charge detrapping from the 70 °C trapping levels was the major contributor to the observed persistent luminescence at room temperature. The SrAl2O4: Eu2+, Dy3+ phosphors have suitable properties to be applied as storage and persistent luminescence UV-VIS irradiation dose phosphor. © 2011 Elsevier Ltd. All rights reserved.
Original languageAmerican English
Pages1417-1420
Number of pages4
DOIs
StatePublished - 1 Dec 2011
EventRadiation Measurements -
Duration: 1 Dec 2011 → …

Conference

ConferenceRadiation Measurements
Period1/12/11 → …

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