A semi-analytical model of Bilayer Graphene Field Effect Transistor

Details A semi-analytical model of Bilayer Graphene Field Effect Transistor A semi-analytical model of Bilayer Graphene Field Effect Transistor

2008-12-27

arxiv.org/abs/0812.4739v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Bilayer graphene has the very interesting property of an energy gap tunable with the vertical electric field. We propose an analytical model for a bilayer-graphene field-effect transistor, suitable for exploring the design parameter space and to find a device structure with promising performance in terms of transistor operation. Our model, based on the effective mass approximation and ballistic transport assumptions, takes into account bilayer-graphene tunable gap and self polarization, and includes all band-to-band tunneling current components, which are shown to represent the major limitation to transistor operation, because the limited achievable energy gap is not sufficient to obtain a large Ion/Ioff ratio.

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