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Proceedings Paper

Metal nanocluster and sodalime glasses: an XPS characterization
Author(s): G. Speranza; L. Minati; A. Chiasera; M. Ferrari; G. C. Righini
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Paper Abstract

Metal nanoparticles are lately emerging materials to improve the optical performances of photonic device. This is ascribable to the high cross-section of the metal nanoparticle leading to high energy transfer and consequent luminescent emission from rare earth dopants. In this work we study Ag nanoparticles embedded in a sodalime network. Silver dispersions with different concentrations in the host network were obtained through ion-exchange treatments at temperatures below Tg. Optical properties were investigated through absorption and emission photoluminescence spectra. X-ray Photoelectron Spectroscopy was used to investigate the chemical state as well as size-dependent electronic confinement effects. The changes of the photoelectron core-line binding energies, the change of Auger and valence band line-shapes put forward that there is a clear correlation between the experimental parameters used to make the samples and the extent of quantum confinement. Data from photoelectron spectroscopy well correlate with those from optical measurements. Physico-chemical characterization of optical materials by XPS demonstrated to be of great importance to improve the quality of photonic devices.

Paper Details

Date Published: 12 June 2007
PDF: 8 pages
Proc. SPIE 6593, Photonic Materials, Devices, and Applications II, 65930Q (12 June 2007); doi: 10.1117/12.724181
Show Author Affiliations
G. Speranza, FBK-IRST (Italy)
L. Minati, FBK-IRST (Italy)
A. Chiasera, CNR-IFN, Institute for Photonics and Nanotechnology (Italy)
M. Ferrari, CNR-IFN, Institute for Photonics and Nanotechnology (Italy)
G. C. Righini, CNR-IFAC, N. Carrara Institute Applied Physics (Italy)
CNR (Italy)

Published in SPIE Proceedings Vol. 6593:
Photonic Materials, Devices, and Applications II
Ali Serpengüzel; Gonçal Badenes; Giancarlo C. Righini, Editor(s)

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