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Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells
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Polymer photovoltaic cell embedded with p-type single walled carbon nanotubes fabricated by spray process

Dal-Ho Kim1, Jea-Gun Park

  • 1Advanced Semiconductor Material and Device Development Center, Department of Electronics, Hanyang University, 17 Haengdang-Dong, Seongdong-Gu, Seoul 133-791, Republic of Korea.

Nanotechnology
|July 25, 2012
PubMed

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P-N junction01:11

P-N junction

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...