Local electrical characterization of epitaxial graphene grown on 4H-SiC(0001) using electrostatic force microscopy (EFM) in ambient conditions and at elevated temperatures is presented. EFM provides a straightforward identification of graphene with different numbers of layers on the substrate where topographical determination is hindered by adsorbates. Novel EFM spectroscopy has been developed measuring the EFM phase as a function of the electrical DC bias, establishing a rigorous way to distinguish graphene domains and facilitating optimization of EFM imaging. © 2011 American Chemical Society.
CITATION STYLE
Burnett, T., Yakimova, R., & Kazakova, O. (2011). Mapping of local electrical properties in epitaxial graphene using electrostatic force microscopy. Nano Letters, 11(6), 2324–2328. https://doi.org/10.1021/nl200581g
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