Red onion dye could be the missing ingredient required to bolster ultraviolet (UV) protection for solar cells, scientists say. Solar cells are typically coated with a petroleum-based film to protect ...

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, ...

Scientists have found that a dye made from red onion skin extract, combined with nanocellulose, offers a 99.9% protection rate against UV rays for solar cells. This bio-filter material outperforms ...