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Nanocellulose treated with red onion dye provides effective UV protection for solar cells

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Researchers at the University of Turku , Finland , investigated how to use bio-based materials to produce effective UV protection films for solar cells.

Solar cells are prone to UV-induced degradation and are most often protected against it by petroleum-based films, such as those made of polyvinyl fluoride (PVF) and polyethylene terephthalate ( PET ) Nanocellulose is made by breaking down cellulose into nanoscale fibres.

Sustainable Nanocellulose UV Filters for Photovoltaic Applications: Comparison of Red Onion (Allium cepa) Extract, Iron Ions , and Colloidal Lignin . ACS Applied Optical Materials , 2025 ; DOI: 10.1021 /acsaom.4c00484 Cite This Page:.

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