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April 18, 2007
Solar Cells that Work all Day
Technology Review: Solar Cells That Work All Day
Solar cells generally crank out the most power at noon, when the sun is at its highest point and can strike the cell at a 90-degree angle. Before and after noon, efficiencies drop off. But researchers Georgia Tech Research Institute have come up with a prototype that does the opposite. Their solar cell, whose surface consists of hundreds of thousands of 100-micrometer-high towers, catches light at many angles and actually works best in the morning and afternoon.
Posted by Sun at April 18, 2007 04:41 PM