Artikel,

Carrier statistics and quantum capacitance of graphene sheets and ribbons

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Applied Physics Letters, 91 (9): - (2007)
DOI: http://dx.doi.org/10.1063/1.2776887

Zusammenfassung

In this work, fundamental results for carrier statistics in graphene two-dimensional sheets and nanoscale ribbons are derived. Though the behavior of intrinsic carrier densities in two-dimennsional 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 two-dimensional graphene sheets and nanoribbons.

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