Comment by westurner

> Multi-junction PV cells are not limited by the Shockley–Queisser limit, but are limited by current production methods.

Such as multilayer nanolithography, which nanoimprint lithography 10Xs; https://arstechnica.com/reviews/2024/01/canon-plans-to-disru...

Perhaps multilayer junction PV and TPV cells could be cost-effectively manufactured with nanoimprint lithography.