"OPTICS: Consortium claims solar-cell efficiency record"

What is claimed to be the world's highest efficiency solar cell--42.8 percent, compared with 15 percent for conventional solar cells--was reported recently by a consortium that includes the University of Delaware, where the technology was pioneered, and E.I. du Pont de Nemours and Company (DuPont), which plans to commercialize the approach. Funded by a three-phase, $100-million program called the Very High Efficiency Solar Cell (VHESC) program at the Defense Advanced Research Projects Agency (Darpa), the consortium's three-year goal is to achieve 50 percent efficiencies at a cost of $1,000 per square meter--the cost of conventional solar cells today.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=201202573