High-Frequency Properties of a Graphene Nanoribbon Field-Effect Transistor

Details High-Frequency Properties of a Graphene Nanoribbon Field-Effect Transistor High-Frequency Properties of a Graphene Nanoribbon Field-Effect Transistor

2008-07-28

arxiv.org/abs/0807.4347v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 7 figures

Scientific paper

10.1063/1.3029715

We propose an analytical device model for a graphene nanoribbon field-effect transistor (GNR-FET). The GNR-FET under consideration is based on a heterostructure which consists of an array of nanoribbons clad between the highly conducting substrate (the back gate) and the top gate controlling the dc and ac source-drain currents. Using the model developed, we derive explicit analytical formulas for the GNR-FET transconductance as a function of the signal frequency, collision frequency of electrons, and the top gate length. The transition from the ballistic and to strongly collisional electron transport is considered.

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