Hybrid PV cell with up to 44% efficiency

SolarServer
Researchers at Cavendish Laboratory have developed a "hybrid" solar photovoltaic (PV) cell which can reach up to 44% efficiency by utilizing a greater portion of the spectrum of sunlight.
The new cells not only absorb both red and blue light, but by adding the organic semiconductor pentacene the cells are able to generate two electrons for every photon from the blue light spectrum. Cambridge University Professors Neil Greenham and Sir Richard Friend led the team, which published its research in the journal NanoLetters concurrent with the announcement.
Paper at NanoLetters