The exterior paint-
Titanium dioxide coated with cadmium compound in a water-alcohol mixture creates a "paint" that generates electricity when exposed to light. The "paint" is carcinogenic, and unstable, and the amount of electricity generated is low. Notre Dame University.

Enough of this nonsense about the EPA or "big" somebody shutting research down. If it works and is economically viable, it will be produced.

(One benefit of having solar panels produced in China or wherever is that they will have to deal with disposal of the contaminated water and toxic residues, not North Americans).