Journal
MATERIALS RESEARCH BULLETIN
Volume 46, Issue 4, Pages 627-629Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2010.12.028
Keywords
Inorganic compounds; Optical properties; Defects
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Funding
- Analysis and Testing Foundation of Kunming University of Science and Technology [2010090]
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We report the observation of long lasting red phosphorescence in Sr2SnO4:Sm3+ and Sr2SnO4:Sm3+, Dy3+ phosphors. The decay patterns of afterglow curves demonstrate that the afterglow time of Sr2SnO4:Sm3+ could be prolonged by the incorporation of Dy3+. The remarkable changes in the thermoluminescence glow curve exhibited that the first band responsible for the origin of the afterglow becomes the most prominent feature when Dy3+ added. In other words, the enhancement of the red afterglow in Sr2SnO4:Sm3+, Dy3+ compared with Sr2SnO4:Sm3+ could be ascribed to more appropriate traps (the holetraps V(Sr)) created by the incorporation of Dy3+. (C) 2010 Elsevier Ltd. All rights reserved.
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