Two nanotech methods for engineering solar cell materials have
shown particular promise. One uses thin films of metal oxide
nanoparticles, such as titanium dioxide, doped with other elements,
such as nitrogen. Another strategy employs quantum dots--nanosize
crystals--that strongly absorb visible light. These tiny semiconductors
inject electrons into a metal oxide film, or "sensitize" it, to
increase solar energy conversion. Both doping and quantum dot
sensitization extend the visible light absorption of the metal oxide
materials.
Climate change: the thin end of the wedge - environmentalresearchweb
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Increased Efficiency in Solar Energy Generation with Nanostructured Thin Films
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Cyclists' cellphones help monitor air pollution - tech - 02 January 2008 - New Scientist Tech
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