What is anti-reflection coating of PV module?
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An antireflective or anti-reflection coating is a type of optical coating applied to the surface of pv module to reduce reflection. This improves the efficiency since less light is lost due to reflection. The reflection is reduced by texturing and by applying anti-reflection coatings to the surface.
They consist of a thin layer of dielectric material, with a specially chosen thickness so that interference effects in the coating cause the wave reflected from the anti-reflection coating top surface to be out of phase with the wave reflected from the semiconductor surfaces.
These out-of-phase reflected waves destructively interfere with one another, resulting in zero net reflected energy.