<ul><li>Researchers from the University of Turku, Finland, have found a new way to protect solar cells from harmful UV radiation using natural materials.</li><li>In their study, nanocellulose treated with red onion dye was found to effectively block UV rays while allowing sunlight to pass through.</li><li>This natural UV filter blocked 99.9% of UV rays up to 400 nanometers, outperforming commercial PET-based filters.</li><li>The red onion dye-treated film maintained its UV protection and light transmission over time, making it a promising material for sustainable solar cells.</li></ul>

Red onion dye helps solar cells stay safe from harmful UV rays

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