We present investigations of the energy transfer dynamics after short-pulse excitation in co-doped silica glasses containing silicon nanoclusters (Si-nc) and Er3+ ions. Using a double pulse setup we find evidence for the occurrence of a fast (few hundreds nanoseconds) Si-nc recovery process in samples containing well-defined Si aggregates, whereas a slower recovery is found in a sample annealed for a very short time. The influence of Auger quenching processes taking place between Si-nc and Er3+ in the excited states on the energy transfer process is also shown and discussed. (c) 2005 Elsevier B.V. All rights reserved.

Study of the Si-nanocluster to Er3+ energy transfer dynamics using a double-pulse experiment

Enrichi, F.;
2006

Abstract

We present investigations of the energy transfer dynamics after short-pulse excitation in co-doped silica glasses containing silicon nanoclusters (Si-nc) and Er3+ ions. Using a double pulse setup we find evidence for the occurrence of a fast (few hundreds nanoseconds) Si-nc recovery process in samples containing well-defined Si aggregates, whereas a slower recovery is found in a sample annealed for a very short time. The influence of Auger quenching processes taking place between Si-nc and Er3+ in the excited states on the energy transfer process is also shown and discussed. (c) 2005 Elsevier B.V. All rights reserved.
Si-nanocluster, Erbium, energy transfer, luminescence
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11562/1064626
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