Journal
OPTICAL MATERIALS
Volume 30, Issue 3, Pages 446-450Publisher
ELSEVIER
DOI: 10.1016/j.optmat.2006.11.074
Keywords
phosphors; photoluminescence; EPR; doping
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Europium ion doped monoclinic CaAl2O4 phosphors were obtained at low temperatures (500 degrees C) by the combustion of corresponding metal nitrate-urea mixtures, over a time of 5 min. The product was investigated by X-ray powder diffraction, TEM and SEM. Photoluminescence spectra revealed that europium ions were present in divalent oxidation states. Electron paramagnetic resonance (EPR) measurements at X-band showed the presence of fine structure transitions from Eu2+ ions in CaAl2O4:Eu. (c) 2007 Elsevier B.V. All rights reserved.
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