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Article Dans Une Revue Nanoscale Année : 2018

Transport mechanisms in a puckered graphene-on-lattice

T. Xu
  • Fonction : Auteur

Résumé

Understanding the fundamental properties of graphene when its topography is patterned by the use of a compliant substrate is essential to improve the performances of graphene sensors. Here we suspend a graphene monolayer on SiO2 nanopillar arrays to form a puckered graphene-on-lattice and investigate the strain and electrical transport at the nanoscale. Despite a nonuniform strain in the graphene-on-lattice, the resistivity is governed by thermally activated transport and not the strain. We show that the high thermal activation energy results from a low charge carrier density and a periodic change of the chemical potential induced by the interaction of the graphene monolayer with the nanopillars, making the use of graphene-on-lattice attractive to further increase the electrical response of graphene sensors.
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Dates et versions

hal-02304358 , version 1 (03-10-2019)

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Citer

T. Xu, A. Díaz Álvarez, W. Wei, D. Eschimese, Sophie Eliet, et al.. Transport mechanisms in a puckered graphene-on-lattice. Nanoscale, 2018, 10 (16), pp.7519-7525. ⟨10.1039/C8NR00678D⟩. ⟨hal-02304358⟩
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