Solar cells from donuts and tea
Posted by keelynet on March 20, 2009
Incredible, who would have thought such complex chemicals were in the foods we eat and drink?
“It sounds unbelievable, but it is true. You can harvest most of what you need for a simple solar cell from powdered donuts and tea. Powdered donuts have nanoparticles of titanium dioxide which is a “high band gap semi conductor”. This means that it can be used to make solar cells. The tea is simply used to dye the material so it can pick up the visible spectrum. The process is a bit too involved to be something you would just toss together in the field, but it’s cute nonetheless.
Sorry, the comment form is closed at this time.