Title
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Luminescence of oxyfluoride glasses co-doped with Ag nanoclusters and ions
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Author
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Abstract
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Bulk oxyfluoride glasses co-doped with Ag nanoclusters and Yb3+ ions have been prepared by a melt quenching technique. When excited in the absorption band of the Ag nanoclusters between 300 to 500 nm, these glasses emit a broad band characteristic of the Ag nanoclusters between 400 to 750 nm as well as an emission band between 900 to 1100 nm, originating from Yb3+ ions. The intensity ratio of the Yb3+/Ag emission bands increases with the Ag doping level at a fixed concentration of Yb3+, indicating the presence of energy transfer mechanism from the Ag nanoclusters to the Yb3+ ions. Comparison of time-resolved decay kinetics of the luminescence in the respectively Ag nanocluster-Yb3+ co-doped and single Ag nanocluster doped glasses, hints towards an energy transfer from the red and infrared emitting Ag nanoclusters to the Yb3+ ions. |
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Language
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English
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Source (journal)
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RSC advances
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Publication
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2012
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ISSN
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2046-2069
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DOI
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10.1039/C1RA01026C
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Volume/pages
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2
:4
(2012)
, p. 1496-1501
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ISI
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000299695300038
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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