Electrochemical doping of graphene

Details Electrochemical doping of graphene Electrochemical doping of graphene

2010-10-22

arxiv.org/abs/1010.4763v1

Physics

Condensed Matter

Materials Science

15 pages, 7 figures

Scientific paper

The electrical properties of graphene are known to be modified by chemical species that interact with it. We investigate the effect of doping of graphene-based devices by toluene (C6H5CH3). We show that this effect has a complicated character. Toluene is seen to act as a donor, transferring electrons to the graphene. However, the degree of doping is seen to depend on the magnitude and polarity of an electric field applied between the graphene and a nearby electrode. This can be understood in terms of an electrochemical reaction mediated by the graphene crystal.

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