Journal
JOURNAL OF LUMINESCENCE
Volume 127, Issue 2, Pages 483-488Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2007.02.038
Keywords
barium aluminate; energy transfer; Ce3+/Mn2+; luminescence
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Powder samples of barium aluminate doped with Mn2+ and Ce3+ were prepared by solid-state reaction method and their photoluminescence and thermoluminescence properties were studied. Substitution of Ca/Sr in place of Ba resulted in enhanced emission from Ce3+ ions without changing the spectral profile. Cerium efficiently sensitized the manganese luminescence in barium aluminate. Photoluminescence and thermo luminescence observations have indicated the presence of V-k(3+) defects in undoped barium aluminate. However, Barium aluminate (either undoped or doped with manganese) did not exhibit long afterglow. (C) 2007 Elsevier B.V. All rights reserved.
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