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arXiv · 1311.5124

Reducing disorder in graphene nanoribbons by chemical edge modification

Jan Dauber·Bernat Terrés·Christian Volk·Stefan Trellenkamp·Christoph Stampfer
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Abstract

We present electronic transport measurements on etched graphene nanoribbons on silicon dioxide before and after a short hydrouoric acid (HF) treatment. We report on changes in the transport properties, in particular, in terms of a decreasing transport gap and a reduced doping level after HF dipping. Interestingly, the effective energy gap is nearly unaffected by the HF treatment. Additional measurements on a graphene nanoribbon with lateral graphene gates support strong indications that the HF significantly modifies the edges of the investigated nanoribbons leading to a significantly reduced disorder potential in these graphene nanostructures.

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Jan Dauber, Bernat Terrés, Christian Volk, Stefan Trellenkamp, Christoph Stampfer. 2013-11-21. Reducing disorder in graphene nanoribbons by chemical edge modification. https://doi.org/10.1063/1.4866289

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