(News via NoCamels.) Technion-Israel Institute of Technology researchers have now found a new way to generate an electrical field inside quantum dots, making them more suitable for building energy-efficient nano-crystal solar cells rather than the silicon-based cells currently used.
http://nocamels.com/2011/12/researchers-find-new-way-to-create-low-cost-solar-cells/
http://www.newswise.com/articles/technion-researchers-find-new-way-to-charge-solar-cell-materials