Make a Solar Cell - TiO2/Raspberry based

In this video we show how to make a dye sensitized solar cell based on titanium dioxide and anthocyanin found in raspberries.

First get some titanium dioxide (anatase structure), about 0.5g will do. Then mix it with drops of vinegar until it has the consistency of thin paint or liquid corrector fluid. Add a drop of dishwashing detergent. This is to make it stick to the glass.

Now get a piece of indium tin oxide glass. The indium tin oxide glass was purchased from delta technologies http://www.delta-technologies.com/

using a multimeter set to measure resistance, find the conductive side by measuring the resistance of the glass. The side that's conductive will have a much lower resistance than the non-conductive side.

Tape the glass on three sides onto a flat surface, conductive side up. there should be able 5mm of tape on each edge. The tape will serve as a spacer guide for the titanium dioxide.

... https://www.youtube.com/watch?v=WHTbw5jy6qU