Study On Preparation And Application Of Scattering Coatings And Antireflection Coatings

Optical thin film as an important branch of modern optics has been widely used in various fields such as business, agriculture, construction, transportation, medical, military, astronomy, infrared physics, and laser technology. Especially, recently with the energy shortage of conventional energy pollution, solar energy as clean and renewable energy with many advantages, but how to improve the solar conversion efficiency has been one of the most concerns. High-performance antireflection films have shown great promise for such task. Because it not only can greatly improve the conversion efficiency of solar cells, but also can be applied to all types of solar cells. In addition, for one of the technical problems of glare that limited the promoted application of LED lighting. Therefore, studies on the scattering films also play an important significance.This paper systematically studied is based on the micro-structure of the polymer mixed with TiO2nanoparticles, achieved that to control the scattering coefficient of the film through changing the size and doping concentration within the certain range. This paper also systematically studied the preparation of the SiO2sol concentration, Ag concentration, thickness of AR coatings, annealing temperature etc., discussed the antireflection coatings containing Ag and the silica medium system on the surface of the porous, size, shape, refractive index, the transmission and scattering. As a result, the transmittance values of95.7%and97.2%of AR coatings with0.10wt.%Ag and annealed at400℃were obtained in the visible wavelength for a single-side and double-side coated glass slides, respectively. The enhanced transmittance and scattering of the AR coatings are primarily attributable to the large forward scattering of nanostructured Ag. This work is expected to further improve the absorption of solar cells and helpfully fog the LED spot light due to its light scattering.