I want to know how to make a sample solar cell which can generate power of a very small magnitude. What material is required and how would I assemble it to make a simple solar cell?
For my optoelectronics class final project, my group attempted to make a nanocrystalline titanium dioxide solar cell. Short of having access to silicon fab equipment, I think this dye-sensitized solar cell is the best you can do.
The (slightly) less-common materials it uses are:
- Tin-oxide-coated glass plates/slides
- Nanocrystalline TiO2
- Potassium iodide
Ours ended up failing, I believe it was because the consistency of our TiO2 paste wasn't that good, or some possible shorts between the plates. This seems to be a fairly common educational cell, and the mechanism of action is well-described.