07 Feb '12, 9pm

Solar Panel Startup Achieves Amazing 33.9% Efficiency

To capture a better chunk of the solar spectrum, Semprius uses three layers of gallium arsenide, each one tweaked to convert a different part of the spectrum into electricity. Silicon solar cells, by contrast, only absorb a narrow band of sunlight and have efficiency rates that typically fall somewhere in the sub-15 percent area. The record for silicon cell efficiency is 22.9 percent and the previous record for commercial-level solar technology was 32 percent.

Full article: http://www.ecogeek.org/solar-power/3702-solar-panel-start...

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