MIT Unveils Solar Power System That Doesn't Need Sunlight

Wow! The author discovered, that a photon, other than from light is still a photon, and can do a photon's work. Wow!

Aside that, the discovery speaks of a discovery of diffuse source into a (maybe) single frequency reradiation. Excellent. And efficiency stinks for sure. Now, that is normal for new discoveries, acceptable, except in batteries and energy production.

Aside that, light to electricity conversion efficiency (the basis of all solar panels) is determined by the bandgap of the selected material. Low energy photons do not do anything useful. High energy photons convert to electricity according to the bandgap. Their excess energy is wasted.

Real efficiency exists ONLY at or slightly above the bandgap set photon energies.

Other than that, the article was interesting.

hmmm, pretty interesting. The question is how much heat can be generated out of light and how much radiation energy from the sun we get with out the light.