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  4. Anti-soiling surfaces for PV applications prepared by sol-gel processing: Comparison of laboratory testing and outdoor exposure
 
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2016
Journal Article
Title

Anti-soiling surfaces for PV applications prepared by sol-gel processing: Comparison of laboratory testing and outdoor exposure

Abstract
Nanoporous SiO2 antireflective films and films additionally incorporating larger particles in this matrix were prepared by sol-gel processing; the latter exhibits a randomly corrugated surface pattern. Both films show a significant anti-soiling effect versus standardized test dust materials of different particle size distributions. The surface coverages determined by laser scanning microscopy were correlated to the respective optical properties. These laboratory results were compared to long-term outdoor exposure experiments performed in the Kingdom of Saudi Arabia. A vast potential of sol-gel derived coatings for anti-soiling applications is demonstrated, nevertheless the high complexity of the particle-surface interaction mechanisms cannot be underestimated.
Author(s)
Bahattab, Mohammed A.
Alhomoudi, Ibrahim A.
Alhussaini, Mohammed I.
Mirza, Mark  
Fraunhofer-Institut für Silicatforschung ISC  
Hegmann, Jan
Fraunhofer-Institut für Silicatforschung ISC  
Glaubitt, Walther  
Fraunhofer-Institut für Silicatforschung ISC  
Löbmann, Peer  
Fraunhofer-Institut für Silicatforschung ISC  
Journal
Solar energy materials and solar cells  
DOI
10.1016/j.solmat.2016.07.004
Language
English
Fraunhofer-Institut für Silicatforschung ISC  
Keyword(s)
  • sol-gel

  • Glasbeschichtung

  • schmutzabweisend

  • Antireflexschicht

  • Photovoltaik

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