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Solid-state physics

Doping the undopable

Impurities that increase the number of electron carriers are essential in most bulk semiconductors. Introducing such foreign atoms into semiconductor nanocrystals is fiddly, and requires exact knowledge of the material's surface.

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Figure 1: Nanoscale doping.

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Galli, G. Doping the undopable. Nature 436, 32–33 (2005). https://doi.org/10.1038/436032a

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