A while back I thought to myself: if plants could absorb the entire(or most of) light spectrum as opposed to a narrow range, would it be better/absorb more energy/etc. Recently i read that was not the case because any higher on the spectrum and it could knock electrons loose(or something like that) and any lower and it would generate heat instead. Also the article said that plants focus on specific wavelengths for photosynthesis, hence the colors.
If heat is the main issue, then is it possible to turn the heat energy into usable chemical energy? Potentially allowing plants to absorb a much larger range on the light spectrum? And if the plant could absorb heat as well, would it be cool/cold to the touch?