Simulation on antireflection of the oxide nanosphere monolayer film.

We theoretically simulate the antireflective effects of oxide nanosphere monolayer films in the visible spectrum. The essential geometric and material parameters of nanosphere films are simulated and different functions are proposed to describe the dependence of reflectance on the influencing factors. The rational function is fitted to describe the monotonic decreasing of reflectance on the ratio of nanospheres' radius to incident wavelength. At a wavelength of 550 nm and incidence at 75°, the reflectance of the glass substrate coated with decreases to 14.1% compared with 41.7% of the uncoated glass. The results have an excellent potential for applications in optical devices such as filters, polarizing elements, and camera lenses.