doug141 writes: In standard solar cells, much energy is lost (as heat) from photons mismatched to the capability of silicon to capture them. A new technique uses a pentacene layer to down-convert each hot (un-captureable) electron to two electrons that can be captured by standard silicon cells.
Dealing with the problem of pure staff accumulation,
all our researches ... point to an average increase of 5.75% per year.
-- C.N. Parkinson