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Article Dans Une Revue Nanotechnology Année : 2008

Large and flat graphene flakes produced by epoxy bonding and reverse exfoliation of highly oriented pyrolytic graphite

Résumé

We present a fabrication method producing large and flat graphene flakes that have a few layers down to a single layer based on substrate bonding of a thick sample of highly oriented pyrolytic graphite (HOPG), followed by its controlled exfoliation down to the few to single graphene atomic layers. As the graphite underlayer is intimately bonded to the substrate during the exfoliation process, the obtained graphene flakes are remarkably large and flat and present very few folds and pleats. The high occurrence of single-layered graphene sheets being tens of microns wide in lateral dimensions is assessed by complementary probes including spatially resolved micro-Raman spectroscopy, atomic force microscopy and electrostatic force microscopy. This versatile method opens the way for deposition of graphene on any substrates, including flexible ones.

Domaines

Matériaux

Dates et versions

hal-00386286 , version 1 (20-05-2009)

Identifiants

Citer

Vincent Huc, Nedjma Bendiab, Noël Rosman, Thomas Ebbesen, Cécile Delacour, et al.. Large and flat graphene flakes produced by epoxy bonding and reverse exfoliation of highly oriented pyrolytic graphite. Nanotechnology, 2008, 19 (45), pp.455601. ⟨10.1088/0957-4484/19/45/455601⟩. ⟨hal-00386286⟩
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