what range of the electromagnetic spectrum powers photovoltaic cells?

Question

if you are going to use the word light please specify if visible light

Answer 1

That varies greatly, depending on the details of the technology, crystal structure, materials, and so on. The reference gives a good overview of this. A single semiconductor energy gap responds to a specific wavelength of light. Cascading a series of materials, each responding to a different set of wavelengths, has the prospect of highest efficiency. Of course, it also has the highest cost.

Answer 2

Probably cells could be developed that do use UV or IR but photovoltaic use light photons.