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 quantum computers and other electronics, the researchers say.
Read more at http://cleantechnica.com/2013/03/25/solar-cell-efficiency-theoretical-limit-broken-single-nanowire-super-concentrate-sunlight/#3eXxM2HQTvZRp8TH.99
Solar energy schemes have no fuel charges, no meter on the sun, so most of their cost comes from the initial buying into in equipment to assemble it in a use-able pattern whether it be oil wells to collect "black gold" or solar collectors and panels to collect the sun's energy exactly.
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