"Molecular Beam Growth Of Graphene Nanocrystals On Dielectric Substrate" by Ulrich Wurstbauer, Theanne Schiros et al.
 

Faculty Publications

Molecular Beam Growth Of Graphene Nanocrystals On Dielectric Substrates

Document Type

Article

Journal/Book/Conference Title

Carbon

Volume

50

Issue

13

First Page

4822

Last Page

4829

Abstract

We demonstrate the growth of graphene nanocrystals by molecular beam methods that employ a solid carbon source, and that can be used on a diverse class of large area dielectric substrates. Characterization by Raman and near edge X-ray absorption fine structure spectroscopies reveal a sp 2 hybridized hexagonal carbon lattice in the nanocrystals. Lower growth rates (below 0.5 /min) favor the formation of layered, larger size multi-layer graphene crystallites (up to 22 nm) on all investigated substrates. The surface morphology is determined by the roughness of the underlying substrate (RMS ∼8 ) and graphitic monolayer steps are observed by ambient scanning tunneling microscopy. © 2012 Elsevier Ltd. All rights reserved.

Department

Department of Physics

Original Publication Date

11-1-2012

DOI of published version

10.1016/j.carbon.2012.06.008

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