Title
Luminescence of oxyfluoride glasses co-doped with Ag nanoclusters and <tex>$Yb^{3+}$</tex> ionsLuminescence of oxyfluoride glasses co-doped with Ag nanoclusters and <tex>$Yb^{3+}$</tex> ions
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Publication type
article
Publication
Subject
Physics
Chemistry
Source (journal)
RSC advances
Volume/pages
2(2012):4, p. 1496-1501
ISSN
2046-2069
ISI
000299695300038
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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.
E-info
https://repository.uantwerpen.be/docman/iruaauth/5e269f/bd61257.pdf
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