If you’re thinking UV is a broad brush, you’re right. [David Prutchi] says he is most interested in Solar Blind UV (SBUV): Solar radiation in the 240 nm to 280 nm range is completely absorbed ...

The film treated with red onion dye proved to be an interesting solution, exceeding 80% light transmission at longer wavelengths (650–1,100 nanometers). The film also maintained its performance ...

In lab tests, separate sheets of nanocellulose film that had been treated with each of the additives were applied to dye-sensitized solar cells, which were then placed under a UV lamp for 1,000 hours.

Nanocellulose treated with red onion dye provides effective UV protection for solar cells. ScienceDaily . Retrieved April 1, 2025 from www.sciencedaily.com / releases / 2025 / 03 / 250319143203.htm ...