Densification and nanocrystallisation of sol-gel ZrO
2
thin films studied by surface plasmon polariton-assisted Raman spectroscopy |
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Authors: | A Brioude F Lequevre J Mugnier C Bovier J Dumas JC Plenet |
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Institution: | (1) Département de Physique des Matériaux, Université Claude Bernard Lyon1 CNRS UMR 5586, 43 boulevard du 11 Novembre, 69622 Villeurbanne Cedex, France, FR;(2) Laboratoire de Physico-Chimie des Matériaux Luminescents, Université Claude Bernard Lyon1, 43 boulevard du 11 Novembre, 69622 Villeurbanne Cedex, France, FR |
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Abstract: | Very thin ZrO
2
films (few nanometers) have been prepared by sol-gel process. These films were deposited onto a stack of a thin silver layer
evaporated on a glass substrate for Surface Plasmons Resonance (SPR) experiments. The first aim of this work is to study the
high densification of the sol-gel films followed by the refractive index and thickness accurate measurements at each step
of the annealing procedure, using an optical set-up based on SPR. Secondly, SPR excitation coupled with micro-Raman experiment
has also been performed to determine the thin films structure depending on layer thickness. Finally, Conventional Transmission
Electron Microscopy (CTEM) and High Resolution (HRTEM) studies have been conducted to check and complete Raman spectroscopy
results. A discussion compares the optical results and the Transmission Electron Microscopy observations and shows that ultra
thin layers structure is strongly depends on films thickness.
Received 14 May 2001 and Received in final form 2 January 2002 |
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Keywords: | PACS 42 79 -e Optical elements devices and systems – 78 30 -j Infrared and Raman spectra – 78 66 -w Optical properties of specific thin films – 81 20 Fw Sol-gel processing precipitation |
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