Electrostatic deposition of large-surface graphene

Trudeau, Charles, Dion-Bertrand, Laura-Isabelle, Mukherjee, Sankha, Martel, Richard et Cloutier, Sylvain. 2018. « Electrostatic deposition of large-surface graphene ». Materials, vol. 11, nº 1. p. 116.
Compte des citations dans Scopus : 3.

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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.

Item Type:	Peer reviewed article published in a journal
Uncontrolled Keywords:	Fonds d'auteur ÉTS, FAETS
Professor:	Professor Cloutier, Sylvain G.
Affiliation:	Génie électrique
Date Deposited:	12 Jan 2018 20:10
Last Modified:	22 Jan 2020 19:45
URI:	https://espace2.etsmtl.ca/id/eprint/16123

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