Interatomic Coupling of Au Molecular Clusters and Er3+ Ions in Silica

Interatomic Coupling of Au Molecular Clusters and Er3+ Ions in Silica

To unveil the mechanisms of energy transfer between Au N nanostructures and Er3+ ions in silica is of paramount importance for the possible use of Au molecular clusters as sensitizing agents of the rare-earth luminescence in photonic devices. In the present work a phenomenological model was develope...

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Veröffentlicht in:ACS photonics 2015-01, Vol.2 (1), p.96-104
Hauptverfasser: Cesca, Tiziana, Kalinic, Boris, Maurizio, Chiara, Scian, Carlo, Battaglin, Giancarlo, Mazzoldi, Paolo, Mattei, Giovanni
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container_title ACS photonics
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creator Cesca, Tiziana
Kalinic, Boris
Maurizio, Chiara
Scian, Carlo
Battaglin, Giancarlo
Mazzoldi, Paolo
Mattei, Giovanni
description To unveil the mechanisms of energy transfer between Au N nanostructures and Er3+ ions in silica is of paramount importance for the possible use of Au molecular clusters as sensitizing agents of the rare-earth luminescence in photonic devices. In the present work a phenomenological model was developed that allowed us to estimate the most important photophysical parameters as the sensitization cross-section, the fraction of sensitized Er ions, and the coupling distance of the energy transfer. The results demonstrate that in spite of very large sensitization cross-sections (more than 3 orders of magnitude higher than the intrinsic Er excitation cross-section in silica) only a limited fraction of Er ions (
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