DIY Solar Cells Made from Doughnuts and Tea
A group of scientists at Notre Dame have shown how dye-sensitised solar cells can be made from doughnuts and tea.
In a fast-paced video, Blake Farrow and the PVK group run through a process that essentially combines chemicals from tea and American-style sugared doughnuts to form a solar energy soaking film that can be applied to a sheet of glass.
The process isn't easy and requires a fair amount of scientific kit, but he starts by extracting titanium dioxide nanoparticles from some powdered sugar doughnuts. Roughly ten layers of these nanoparticles applied to a sheet of glass is, according to the video's presenter, pretty much a solar cell . But because this set-up on its own won't work with regular sunlight", the presenter next extracts organic dyes from a cup of sweet tea that enables the solar cell to absorb light we can see .
Finally, to prove that his invention works, the solar scientist hooks the cell up to a multimeter that appears to show an electrical current being generated from the DIY solar cell.
