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2011
Journal Article
Titel
Improved scratch resistance for antireflective coatings on sapphire
Abstract
Antireflective coatings on sapphire were optimized by variation of the coating design, the total thickness, and the highly refractive material used. The coatings were characterized with a focus on their scratch resistance. An increased resistance against scratching wear is shown for hafnia-containing coatings with a total thickness of about 500 nm.