Luminescence of oxyfluoride glasses co-doped with Ag nanoclusters and Yb3+ ions

V.K. Tikhomirov, Tom André Jos Vosch, E. Fron, V.D. Rodriguez, J.J. Velazquez, D. Kirilenko, G. Van Tendeloo, J. Hofkens, M. Van der Auweraer, V.V. Moshchalkov

48 Citationer (Scopus)

Abstract

Bulk oxyfluoride glasses co-doped with Ag nanoclusters and Yb 3+ 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 Yb 3+ ions. The intensity ratio of the Yb 3+/Ag emission bands increases with the Ag doping level at a fixed concentration of Yb 3+, indicating the presence of energy transfer mechanism from the Ag nanoclusters to the Yb 3+ ions. Comparison of time-resolved decay kinetics of the luminescence in the respectively Ag nanocluster-Yb 3+ co-doped and single Ag nanocluster doped glasses, hints towards an energy transfer from the red and infrared emitting Ag nanoclusters to the Yb 3+ ions.

OriginalsprogEngelsk
TidsskriftRSC Advances
Vol/bind2
Udgave nummer4
Sider (fra-til)1496-1501
Antal sider6
ISSN2046-2069
DOI
StatusUdgivet - 21 feb. 2012

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