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| Azevedo, Nuno Monteiro |
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Hone, James
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Topics
Publications (10/10 displayed)
- 2024Width-Dependent Growth of Atomically Thin Quantum Nanoribbons
- 2022Chemical Vapor-Deposited Graphene on Ultraflat Copper Foils for van der Waals Hetero-Assemblycitations
- 2022Chemical Vapor-Deposited Graphene on Ultraflat Copper Foils for van der Waals Hetero-Assemblycitations
- 2021Chemical Dopant‐Free Doping by Annealing and Electron Beam Irradiation on 2D Materialscitations
- 2019Magic continuum in twisted bilayer WSe2
- 2019Approaching the Intrinsic Limit in Transition Metal Diselenides via Point Defect Controlcitations
- 2016Electron optics with p-n junctions in ballistic graphenecitations
- 2015Low-voltage organic electronics based on a gate-tunable injection barrier in vertical graphene-organic semiconductor heterostructurescitations
- 2015Photonic and Plasmonic Guided Modes in Graphene-Silicon Photonic Crystalscitations
- 2015Photonic and Plasmonic Guided Modes in Graphene-Silicon Photonic Crystalscitations
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article
Chemical Vapor-Deposited Graphene on Ultraflat Copper Foils for van der Waals Hetero-Assembly
Abstract
<p>The purity and morphology of the copper surface is important for the synthesis of high-quality, large-grained graphene by chemical vapor deposition. We find that atomically smooth copper foils─fabricated by physical vapor deposition and subsequent electroplating of copper on silicon wafer templates─exhibit strongly reduced surface roughness after the annealing of the copper catalyst, and correspondingly lower nucleation and defect density of the graphene film, when compared to commercial cold-rolled copper foils. The "ultrafoils"─ultraflat foils─facilitate easier dry pickup and encapsulation of graphene by hexagonal boron nitride, which we believe is due to the lower roughness of the catalyst surface promoting a conformal interface and subsequent stronger van der Waals adhesion between graphene and hexagonal boron nitride.</p>