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Journal of Sol-Gel Science and Technology

, Volume 1, Issue 3, pp 293–304 | Cite as

A scratch-resistant single-layer antireflective coating by a low temperature sol-gel route

  • H. G. Floch
  • P. F. Belleville
Article

Abstract

A novel quarterwave-thick narrow-bandwidth antireflective coating has been developed for both plastic and vitreous substrates by a sol-gel route. This coating has revealed pronounced scratch- and climatic-resistance under adverse conditions. The single-layer coating consists basically of a composite material made of silica as the discontinuous phase and of a polytetrafluoroethylene-derived (Teflon1) organic polymer as the continuous phase. This leads to fluorine-containing colloidal silica product, or a so-called Flucosil coating. The coating is applied by spinning or dipping from specific solutions at room temperature followed by a mild and short heat treatment. In addition to remarkable abrasion and environmental resistance properties, such coatings have displayed excellent laser-induced damage threshold levels, surpassing uncoated substrates.

We hope such a product might open new perspectives concerning household articles, architectural optical thin-films, ophthalmic uses, and so on.

Key words

antireflective coating colloid composite abrasion resistance environmental resistance 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • H. G. Floch
    • 1
  • P. F. Belleville
    • 1
  1. 1.CEA Centre d'Etudes de Limeil-ValentonVilleneuve Saint-Georges CedexFrance

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