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Optical study of Ag-TiO2 nanocermet thin films prepared by R.F. co-sputtering

Published online by Cambridge University Press:  15 February 2000

A. Dakka ,
J. Lafait ,
M. Abd-Lefdil ,
C. Sella  and
M. Maaza
A. Dakka
Affiliation:
Laboratoire de Physique des Matériaux, Université Mohammed V, Faculté des Sciences, avenue Ibn Batouta, B.P. 1014 Rabat, Morocco Laboratoire d'Optique des Solides (UMR 7601) , Université Pierre et Marie Curie, Case 80, 4 place Jussieu, 75252 Paris Cedex 05, France
J. Lafait*
Affiliation:
Laboratoire d'Optique des Solides (UMR 7601) , Université Pierre et Marie Curie, Case 80, 4 place Jussieu, 75252 Paris Cedex 05, France
M. Abd-Lefdil
Affiliation:
Laboratoire de Physique des Matériaux, Université Mohammed V, Faculté des Sciences, avenue Ibn Batouta, B.P. 1014 Rabat, Morocco
C. Sella
Affiliation:
Laboratoire d'Optique des Solides (UMR 7601) , Université Pierre et Marie Curie, Case 80, 4 place Jussieu, 75252 Paris Cedex 05, France
M. Maaza
Affiliation:
Physics Department, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
*
[email protected]
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Abstract

The optical properties of Ag-TiO2 nanocermet thin films are studied with the aim of optical filtering applications. Beyond the classical properties of cermets with noble metal inclusions predicted by the effective medium theories, the optical properties of Ag-TiO2 nanocermets deposited by R.F. co-sputtering are governed by their columnar morphology and the under-stoichiometry of the TiO2 matrix. A careful experimental analysis of the different parameters and effects involved in the optical response of these nanocermets is performed both on TiO2 and Ag-TiO2: film thickness, silver volume fraction, thermal treatments, oxidation. The influence of these parameters on the surface plasmon resonance and the infrared transmission of the nanocermet thin films is optimized.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 9 , Issue 2 , February 2000 , pp. 105 - 114
Copyright
© EDP Sciences, 2000

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