Novel Hydrophobic Coatings for PV Soiling Mitigation in the PV Industry: Durability and Anti-Soiling Demonstrations
Ben R Strauss1, Kurt L Barth1, John M Walls2, Fabiana Lisco2, Farwah Bukhari2
1Colorado State University, NSF I/UCRC for Next Generation Photovoltaics, Fort Collins, CO, United States
/2Crest, Loughborough University, Loughborough, United Kingdom

Soiling, the buildup of debris on the front-side of a solar module, can significantly reduce the power production due to a reduction in transmitted light to the underlying solar cell. A potential solution to soiling mitigation involves the use of hydrophobic coatings. This study is the first to investigate commercially available hydrophobic coatings found in non-PV sectors of industry. Through the use of anti-soiling and standardized durability testing procedures, the suitability of these existing hydrophobic coatings for use in the PV industry is  quantitatively analyzed.  Anti-soiling properties are demonstrated for both laboratory samples and for a fielded module.