Alternative solar materials
@warren taking notes here on techniques for DIY solar cells. Some are more toxic than others.
Titanium and berry based
(Variation of https://en.wikipedia.org/wiki/Graetzel_cells)
- https://www.instructables.com/id/homemade-solar-cell-using-household-items/
- https://www.instructables.com/id/DIY-solar-cell-from-scratch/