Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7839346 | Journal of Electron Spectroscopy and Related Phenomena | 2018 | 17 Pages |
Abstract
A series of Eu3+ and Ca2+ doped/co-doped BaAl2O4 phosphors were synthesized via a proteic sol-gel route. The effects of the co-dopant Ca2+ on the luminescent properties of BaAl2O4:Eu3+ phosphors were systematically investigated. The samples were excited with monochromatic X-rays from synchrotron radiation. The XEOL (X-ray excited optical luminescence) spectra of all samples, with or without Ca2+ co-doping, exhibit characteristic Eu2+ or Eu3+ emissions, which has significant difference concerning on intensity for rich Ca2+ samples. The total output light of the XEOL spectra increases as the energy of the X-rays photon increases at around the Eu LIII-edge absorption.
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Authors
Marcos V. dos S. Rezende, Adriano B. Andrade, Carlos William A. Paschoal,