Quantum Dots Lead to Better Solar Cells
Filed in archive Energy on August 22, 2007
The addition to quantum dots to solar cells could lead to a tripling in efficiency, boosting from the usual 10% up to 40% or 60% (with concentrators). Silicon nanocrystals (quantum dots) are able to extract two or three electrons for each incoming photon, an unprecedented feat. Although solar is often hailed as a great, environmentally friendly energy source, it has a ways to go before being able to compete with fossil fuels - but efforts like this could make the difference.
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Tags: quantum dot 2007 solar cells quantum+dots solar+cells better+solar
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Rating: 7.17 out of 6 vote(s) cast.
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Response from:
Ramamurthy Vittal
(02/21/08 3:29pm)
Yes, becasue only they have the ability to convert each photon to more than one electron, and their band gap is tiny
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