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Issue 26, 2016
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Mechanism of X-ray excited optical luminescence (XEOL) in europium doped BaAl2O4 phosphor

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Abstract

This paper reports a luminescence mechanism in Eu-doped BaAl2O4 excited with monochromatic X-rays (also known as X-ray excited optical luminescence – XEOL) from synchrotron radiation. The material was prepared via a proteic sol–gel methodology. The X-ray absorption near edge structures (XANES) at the Ba LIII- and Eu LIII-edges exhibit typical absorption spectra. XEOL spectra recorded in energy ranges, either around the Ba LIII- or Eu LIII-edges, showed important differences concerning the intensity of the Eu2+ or Eu3+ emission bands. Nevertheless, the total area under the XEOL spectra increases as the energy of the X-ray photons increases in both ranges (Ba LIII- and Eu LIII-edges).

Graphical abstract: Mechanism of X-ray excited optical luminescence (XEOL) in europium doped BaAl2O4 phosphor

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Article information


Submitted
21 Feb 2016
Accepted
03 Jun 2016
First published
03 Jun 2016

Phys. Chem. Chem. Phys., 2016,18, 17646-17654
Article type
Paper

Mechanism of X-ray excited optical luminescence (XEOL) in europium doped BaAl2O4 phosphor

M. V. D. S. Rezende, P. J. R. Montes, A. B. Andrade, Z. S. Macedo and M. E. G. Valerio, Phys. Chem. Chem. Phys., 2016, 18, 17646
DOI: 10.1039/C6CP01183G

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