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arXiv · 1104.1746

Potential barrier of Graphene edges

Weiliang Wang·Zhibing Li
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Abstract

We calculated row resolved density of states, charge distribution and work function of graphene's zigzag and armchair edge (either clean or terminated alternatively with H, O or OH group). The zigzag edge saturated via OH group has the lowest work function of 3.76 eV, while the zigzag edge terminated via O has the highest work function of 7.74 eV. The angle-dependent potential barrier on the edge is fitted to a multi-pole model and is explained by the charge distribution.

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Weiliang Wang, Zhibing Li. 2011-06-08. Potential barrier of Graphene edges. https://doi.org/10.1063/1.3587186

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