A new study has revealed that dye extracted from red onion skins could significantly improve ultraviolet (UV) protection for solar cells. The research published on February 24 in ACS Applied Optical ...

In the picture, a film dyed with red onion skin extract and dye-sensitised solar cells. The films were placed on top of the solar cells in the study. Researchers at the University of Turku, Finland, ...

Researchers from the University of Turku in Finland investigated the production of efficient UV protection films for solar cells using bio-based materials. The study is the first to compare the ...

It was found that the onion-dye film performed best, blocking 99.9% of UV light with a wavelength of up to 400 nanometers. That said, it still allowed over 80% of visible light transmission at longer ...

Forward-looking: Scientists in Finland have identified a new bio-based material that could help extend the lifespan of solar cells while reducing reliance on petroleum-based plastics. A team led by ...

Smart contact lenses that change colour when exposed to sunlight could help beach-goers better determine when to seek shade or reapply sunscreen. European researchers have developed minuscule labels ...