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ZnO nanowire arrays for enhanced photocurrent in PbS quantum dot solar cells

Joel Jean1, Sehoon Chang, Patrick R Brown

  • 1Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA.

Advanced Materials (Deerfield Beach, Fla.)
|February 27, 2013
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...