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    • 40% Efficiency Solar Cells Developed

      Posted by Jeff from Slashdot

      gtada writes "A story published at Physorg.com discusses recently published research into the fabrication of solar cells that surpass the 40% efficiency milestone. Such devices would be the high water-mark to date, and hint at the possibility of even more effective technology. 'In the design, multijunction cells divide the broad solar spectrum into three smaller sections by using three subcell band gaps. Each of the subcells can capture a different wavelength range of light, enabling each subce...

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      Silicon Valley's next big thing: 'clean tech'

      Posted by Jeff from Christian Science Monitor

      Most of Silicon Valley's current emphasis is on clean energy. Entrepreneurs here are aiming to transform solar, fuel-cell, and biofuel projects into viable industries with huge potential. Already, the market amounts to $55 billion – more than the entire Internet advertising market dominated by the high-tech region's current darling, Google. In 10 years, the clean-energy market by one estimate could quadruple.

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