We investigate doping of a single-layer graphene in the presence of electrolytic top gating. The interfacial phenomena is modeled using a modified Poisson-Boltzmann equation for an aqueous solution of simple salt. We demonstrate both the sensitivity of graphene's doping levels to the salt concentration and the importance of quantum capacitance that arises due to the smallness of the Debye screening length in the electrolyte.
@article{arxiv.0910.3666,
title = {Modeling electrolytically top gated graphene},
author = {Z. L. Miskovic and N. Upadhyaya},
journal= {arXiv preprint arXiv:0910.3666},
year = {2010}
}
Comments
7 pages, including 4 figures, submitted to Nanoscale Research Letters for a special issue related to the NGC 2009 conference (http://asdn.net/ngc2009/index.shtml)