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Letter

Nature Materials 4, 676–679 (1 September 2005) | doi:10.1038/nmat1457

Engineering metal-impurity nanodefects for low-cost solar cells

Tonio Buonassisi , Andrei A. Istratov , Matthew A. Marcus , Barry Lai , Zhonghou Cai , Steven M. Heald & Eicke R. Weber

As the demand for high-quality solar-cell feedstock exceeds supply and drives prices upwards, cheaper but dirtier alternative feedstock materials are being developed. Successful use of these alternative feedstocks requires that one rigorously control the deleterious effects of the more abundant metallic impurities.