Antireflective coating using a WO3–TiO2 nanoparticle photocatalytic composition for high efficiency thin-film Si photovoltaic modules

We propose a cost-effective, low-temperature antireflective coating for the outer glass substrates of 1.43m2 thin-film Si photovoltaic modules using a WO3–TiO2 nanoparticle photocatalyst. The coated nanoporous films provide the broadband antireflective effect, which results in the increased initial...

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Bibliographic Details
Published inSolar energy materials and solar cells Vol. 121; pp. 108 - 113
Main Authors Noh, Hee Nam, Myong, Seung Yeop
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.02.2014
Elsevier
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Summary:We propose a cost-effective, low-temperature antireflective coating for the outer glass substrates of 1.43m2 thin-film Si photovoltaic modules using a WO3–TiO2 nanoparticle photocatalyst. The coated nanoporous films provide the broadband antireflective effect, which results in the increased initial performances. Notably, the self-cleaning effect due to the photo-induced superhydrophilicity leads to a significantly reduced outdoor-exposed degradation. Therefore, the drastic energy output gain of 4.3% is achieved for a tandem photovoltaic module via a long-term outdoor field test. •ARC using the WO3–TiO2 nanoparticle photocatalyst is applied to thin-film Si PV modules.•The coated nanoporous films provide the broadband antireflective effect.•The self-cleaning effect due to the photo-induced superhydrophilicity plays an important role.•The energy output gain of 3.6% is obtained for the a-Si:H single-junction PV module via ARC.•The energy output gain of 4.3% is achieved for the a-Si:H/µc-Si:H tandem PV module due to ARC.
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ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2013.10.038