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Materials 2018, 11(1), 116; https://doi.org/10.3390/ma11010116

Electrostatic Deposition of Large-Surface Graphene

1
Department of Electrical Engineering, École de Technologie Supérieure, 1100 Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada
2
R&D Department, Phonon Etc., 5795 Avenue de Gaspé, Montréal QC H2S 2X3, Canada
3
Department of Mechanical Engineering, McGill University, 845 Sherbrook Ouest, Montréal QC H3A 0G4, Canada
4
Department of Chemistry, Université de Montreal, 2900 Édouard-Montpetit, Montréal QC H3C 3J7, Canada
*
Author to whom correspondence should be addressed.
Received: 29 November 2017 / Revised: 19 December 2017 / Accepted: 11 January 2018 / Published: 12 January 2018
(This article belongs to the Section Carbon Materials)
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Abstract

This work describes a method for electrostatic deposition of graphene over a large area using controlled electrostatic exfoliation from a Highly Ordered Pyrolytic Graphite (HOPG) block. Deposition over 130 × 130 µm2 with 96% coverage is achieved, which contrasts with sporadic micro-scale depositions of graphene with little control from previous works on electrostatic deposition. The deposition results are studied by Raman micro-spectroscopy and hyperspectral analysis using large fields of view to allow for the characterization of the whole deposition area. Results confirm that laser pre-patterning of the HOPG block prior to cleaving generates anchor points favoring a more homogeneous and defect-free HOPG surface, yielding larger and more uniform graphene depositions. We also demonstrate that a second patterning of the HOPG block just before exfoliation can yield features with precisely controlled geometries. View Full-Text
Keywords: graphene; electrostatic deposition; Raman spectroscopy graphene; electrostatic deposition; Raman spectroscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Trudeau, C.; Dion-Bertrand, L.-I.; Mukherjee, S.; Martel, R.; Cloutier, S.G. Electrostatic Deposition of Large-Surface Graphene. Materials 2018, 11, 116.

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