Novel aspects in the chemistry of the non-aqueous fluorolytic sol–gel synthesis of nanoscaled homodisperse MgF2 sols for antireflective coatings

摘要: Water-clear transparent sols of nano-MgF2 and nano-MgF2–CaF2 composites in ethanol were synthesized through the fluorolytic sol–gel synthesis by reaction insoluble precursor magnesium ethoxide with anhydrous hydrogen fluoride. CO2, MgCl2 or CaCl2 are used as auxiliary reagents. The contain monodisperse nanoparticles a size between 5 10 nm, depending on particular method used. In contrast to all previous methods, possess low viscosity offer remarkably high long-time stability for more than one year. It has been demonstrated that they very suitable manufacturing antireflective porous coatings glass substrates remaining reflectivity below 1%, mechanical stability.