A simple, single nanowire crystal is capable of super-concentrating the intensity of the sunlight that it is exposed to up to a factor of 15, researchers from the Niels Bohr Institute have discovered. The surprising discovery means that the assumed limit to solar cell efficiency, the "Shockley-Queisser Limit," can likely be increased. The discovery should lead to new types of high-efficiency solar cells, but also will have uses in potential q ...
http://cleantechnica.com/2013/03/25/solar-cell-efficiency-theoretical-
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