Eur. Phys. J. AP
Volume 9, Number 2, February 2000
|Page(s)||105 - 114|
|Published online||15 February 2000|
Optical study of Ag-TiO2 nanocermet thin films prepared by R.F. co-sputtering
Laboratoire de Physique des Matériaux, Université Mohammed V, Faculté des Sciences, avenue Ibn Batouta,
B.P. 1014 Rabat, Morocco
2 Laboratoire d'Optique des Solides (UMR 7601) , Université Pierre et Marie Curie, Case 80, 4 place Jussieu, 75252 Paris Cedex 05, France
3 Physics Department, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa
Corresponding author: firstname.lastname@example.org
Revised: 17 May 1999
Accepted: 6 December 1999
Published online: 15 February 2000
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.
PACS: 78.20.-e – Optical properties of bulk materials and thin films / 81.05.Ys – Nanophase materials / 81.05.Mh – Cermets, ceramic and refractory composites / 81.40.Tv – Optical and dielectric properties (related to treatment conditions)
© EDP Sciences, 2000
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