Mackwheaton: Might this efficiency bring utilization of POET technology back into the solar energy business as the supplier of a new standard of power conversion?

Consider a POET-powered device like, say, a smartphone, which is consuming much less energy and harvesting solar power much more efficiently – yes, that would be attractive. Depending on device, application and circumstances, battery life would be extended considerably, perhaps even up to the point where no recharge is needed.

However, for the solar energy business I don't see gallium arsenide feasible, because GaAs is too expensive. You need much larger quantities for solar cells than for semiconductor chips, so the GaAs price would play a quite different role for large-scale energy production.

By the way, for solar cells I'd suggest a different material anyway. It's the material with the highest photovoltaic efficiency: uranium dioxide.