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Andres Garcia1, Gregory C Welch, Erin L Ratcliff

  • 1National Center for Photovoltaics, National Renewable Energy Laboratory, Golden, CO 80401, USA.

Advanced Materials (Deerfield Beach, Fla.)
|August 14, 2012
PubMed

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...