Carrier Statistics and Quantum Capacitance of Graphene Sheets and Ribbons

Details Carrier Statistics and Quantum Capacitance of Graphene Sheets and Ribbons Carrier Statistics and Quantum Capacitance of Graphene Sheets and Ribbons

2007-07-15

arxiv.org/abs/0707.2242v1

Physics

Condensed Matter

Materials Science

3 pages, 3 figures, submitted to Applied Physics Letters

Scientific paper

10.1063/1.2776887

In this work, fundamental results for carrier statistics in graphene 2-dimensional sheets and nanoscale ribbons are derived. Though the behavior of intrinsic carrier densities in 2d graphene sheets is found to differ drastically from traditional semiconductors, very narrow (sub-10 nm) ribbons are found to be similar to traditional narrow-gap semiconductors. The quantum capacitance, an important parameter in the electrostatic design of devices, is derived for both 2d graphene sheets and nanoribbons.

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