We obtain the output characteristics of graphene field-effect transistors by using the charge-control model for the current, based on the solution of the Boltzmann equation in the field-dependent relaxation time approximation. Closed expressions for the conductance, transconductance and saturation voltage are derived. We found good agreement with the experimental data of Meric et al. [1], without assuming a carrier density-dependent velocity saturation.
@article{arxiv.1007.3504,
title = {High-field Carrier Velocity and Current Saturation in Graphene Field-Effect Transistors},
author = {Brett W. Scott and Jean-Pierre Leburton},
journal= {arXiv preprint arXiv:1007.3504},
year = {2010}
}
Comments
4 pages, 5 figures, submitted to IEEE Nano 2010 conference