Simulation of hydrogenated graphene Field-Effect Transistors through a multiscale approach

Details Simulation of hydrogenated graphene Field-Effect Transistors through a multiscale approach Simulation of hydrogenated graphene Field-Effect Transistors through a multiscale approach

2010-04-03

arxiv.org/abs/1004.0428v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

In this work, we present a performance analysis of Field Effect Transistors based on recently fabricated 100% hydrogenated graphene (the so-called graphane) and theoretically predicted semi-hydrogenated graphene (i.e. graphone). The approach is based on accurate calculations of the energy bands by means of GW approximation, subsequently fitted with a three-nearest neighbor (3NN) sp3 tight-binding Hamiltonian, and finally used to compute ballistic transport in transistors based on functionalized graphene. Due to the large energy gap, the proposed devices have many of the advantages provided by one-dimensional graphene nanoribbon FETs, such as large Ion and Ion/Ioff ratios, reduced band-to-band tunneling, without the corresponding disadvantages in terms of prohibitive lithography and patterning requirements for circuit integration.

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