Preparation of Two-Layer Hi-Strength Antireflective Coatings Used in Solar Glass

A type of two-layer SiO2-TiO2 antireflective(AR)coatings used in solar glass was introduced in this paper to improve the complicated two-step catalytic process and promote the mechanical strength of the coatings.Based on the coating design program,the reflectance of the two-layer(λ/4-λ/2 type)AR coatings and the optical parameters of the coating were designed and optimized.Meanwhile,the two-layer SiO2-TiO2 AR coatings was successfully coated on the glass substrate by sol-gel method.The performance of the coatings was analyzed with instruments such as Ellipsometer,UV-VIS-NIR Spectrophotometer,Atomic Force Microscopy.The results show that the average transmittance of glass coated in this way was increased by more than 6% at the wave band of 400 nm~800 nm.And the mechanical strength of the coatings is very well.