Modeling Electrolytically Top-Gated Graphene

We investigate doping of a single-layer graphene in the presence of electrolytic top gating. The interfacial phenomenon 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 conc...

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Published in:Nanoscale research letters 2010-01, Vol.5 (3), p.505-511
Main Authors: Mišković, Z. L, Upadhyaya, Nitin
Format: Article
Language:English
Subjects:
Electrolyte
Gating
Graphene
Poisson-Boltzmann model
Quantum capacitance
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Upadhyaya, Nitin
description We investigate doping of a single-layer graphene in the presence of electrolytic top gating. The interfacial phenomenon 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.
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1556-276X
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subjects Electrolyte
Gating
Graphene
Poisson-Boltzmann model
Quantum capacitance
title Modeling Electrolytically Top-Gated Graphene
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