Journal
MATERIALS RESEARCH BULLETIN
Volume 74, Issue -, Pages 151-155Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2015.10.028
Keywords
Optical Materials; Optical Properties; Luminescence; Energy storage; Phosphors
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Funding
- National Nature Science Foundation of China [61308091, 61565009]
- Young Talents Support Program of Faculty of Materials Science and Engineering, Kunming University of Science and Technology [14078342]
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A red long-lasting phosphorescence phosphor Ca2Ge7O16:Sm3+ was synthesized by a high temperature solid state reaction. The persistent energy transfer process from Ca2Ge7O16 host to Sm3+ was confirmed to be much more efficient than that in the photoluminescence process. The color of the persistent luminescence could be adjusted from blue to red with increasing concentration of Sm3+ accordingly. Based on the analysis of the thermoluminescence curves, it was found that Sm3+ doped Ca2Ge7O16 also provided a possibility to be a kind of photo-storage phosphor. Detailed mechanism were studied and illustrated. (C) 2015 Elsevier Ltd. All rights reserved.
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