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Study of Al2O3/TiO2reflectivity enhancing bi-layer films on bright aluminium substrates

Authors
Journal
Applied Surface Science
0169-4332
Publisher
Elsevier
Publication Date
Volume
254
Issue
6
Identifiers
DOI: 10.1016/j.apsusc.2007.07.073
Keywords
  • Aluminium
  • Reflectivity
  • Al2O3Layers
  • Tio2Layers
  • Anodising
  • Sol–Gel Process

Abstract

Abstract Al 2O 3/TiO 2 bi-layer films on aluminium substrates have been obtained by combining anodising and TiO 2 sol–gel deposition. The reflectivity enhancing properties of these Al 2O 3/TiO 2 bi-layer films have been studied in relation to the refractive index and thickness of the Al 2O 3 and TiO 2 single-layers. It is shown that a significant improvement of reflectivity can be achieved by a proper optimisation of the bi-layer elaboration parameters.

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