The Holy Grail of energy has been, is, and will be the solar power. Numerous solutions of converting solar power have existed along the centuries, and people have always used the Sun to power things up, except for the last hundred years or so – that’s the main reason we all got into troubles with mother nature.
Researchers have been seeking for many years now ways to make more efficient solar cells, from cheap and reliable materials. They have not only looked at the latest discoveries of the moment, but also in the natural medium, by using organic dyes as filters for their new cheap solar cells. The truth is that these organic-based solar cells are not as efficient as the silicon-based ones (or at least they’re not yet).
The most beautiful thing is that these dye-sensitized solar cells are so lo-tech that they can even be built at home with little effort, if you have some DIY skills. These cells are made from donuts and colored tea. The only thing you need to buy specially is the conductive glass. Other parts are a patch of band tape and two wires. Watch the video below to figure how these guys did it: