Researchers from the University of Turku in Finland have made a surprising finding: red onion skin could be a key material for improving the durability of solar panels. This discovery is based on the ability of the natural dye extracted from the skin to block ultraviolet (UV) radiation, one of the main factors contributing to the deterioration of these devices.
The study proposes a sustainable alternative to traditional coatings, which typically use petroleum-derived plastics. By combining nanocellulose with onion dye, scientists were able to create a thin film that acts as a protective filter, allowing more than 80% of the light necessary for electricity generation to pass through.
Laboratory tests have shown that this new material can block up to 99.9% of UV rays, surpassing the effectiveness of conventional filters. This not only extends the lifespan of solar panels but also maintains their performance. This advancement paves the way for new applications in sustainable technologies by utilizing organic waste in the manufacturing of components.
