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How to Double the Power of Solar Panels


In an attempt to further drop the cost of solar power, Bandgap Engineering, a startup in Woburn, Massachusetts, is developing a nanowire-based solar cell that could eventually generate twice as much power as conventional solar cells.

That's a long-term project, but meanwhile the company is about to start selling a simpler version of the technology, using silicon nanowires that can improve the performance and lower the cost of conventional silicon solar cells. Bandgap says its nanowires, which can be built using existing manufacturing tools, boost the power output of solar cells by increasing the amount of light the cells can absorb.

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