Positioning of the Fermi Level in Graphene Devices with Asymmetric Metal Electrodes

<table>Gate response curves measured from a symmetric Au-contact graphene device (1-2), a Ni-contact device (3-4), and an asymmetric-contact device containing Ni and Au contacts (2-3). Inset: Optical microscope image of graphene with asymmetric hetero-metal electrodes (Au, Ni).</table>

Journal of Nanomaterials

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Figure 4

Figure 4: Positioning of the Fermi Level in Graphene Devices with Asymmetric Metal Electrodes 