Antireflective and hydrophobic coated lenses for photovoltaic moduls

An energy conversion efficiency of a solar cell as well as a quality of a lens concentrator is of the great importance in modern PV (photovoltaic) modules. Lens concentrators must provide maximum energy through to solar cell and must be resistant against water and water vapor. Utilization of a reflection losses from the inner and outer surfaces of lens so that maximize photon energy that goes through to solar cell was the work's purpose. Multilayer antireflective coated polymer lens with high adhesion was proposed. Good adhesion was achieved by the formation of solid layer on the surface of the lens by means of sinking and removing the lens in the liquid polysiloxanevarnish basin before layering with antireflective coatings. On the basis of the technology described above we have manufactured lab models of lens concentrators intended for solar photoelectric converters. These samples have been tested with the spectrometer and established that the light intensity in spectral area 550-750 nm has increased at 8% on average. (author)