Anti-reflecting silica coatings on glass produced by sol-gel

摘要

Up to now antireflective silica thin films deposited on glass have not enough strength and poor adhesion to the substrate that do not allow glass cover cleaning. Polymeric route has been used to obtain silica antireflective films on glass with the addition of an additive that introduces a certain degree of porosity in the silica films. Porous silica layers, obtained from the polymeric route, permit a considerable reduction of these light reflections compared with uncoated glasses in all the studied cases. Solar transmittance is increased from 0.915 for the bare slide up to 0.970 for the silica thickness optimised coated sample.