Sol-Gel Synthesis of Modified Silica Anti-Reflecting Coatings

The thickness of the modified silica coatings and their transparency at specified wavelength were easily controled by changing sol concentration and the parameters of the spin-coating formation process. It was demonstrated that the modification of sols changes the maximum of the transmittance for the certain range of wavelength. Using modification process of the sols in the technology of preparation of transparent coatings, their hydrophobic properties and resistance to humidity increased. The transmittance spectra of the 3% SiO2 coatings, which were applied on different glass substrates, showed that the usage of suitable sol and coating program will result a formation of films which possess antireflective properties