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Direct oriented growth of armchair graphene nanoribbons on germanium

Robert M. Jacobberger, Brian Kiraly, Matthieu Fortin-Deschenes, Pierre L. Levesque, Kyle M. McElhinny, Gerald J. Brady, Richard Rojas Delgado, Susmit Singha Roy, Andrew Mannix, Max G. Lagally, Paul G. Evans, Patrick Desjardins, Richard Martel, Mark C. Hersam, Nathan P. Guisinger and Michael S. Arnold

Article (2015)

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Cite this document: Jacobberger, R. M., Kiraly, B., Fortin-Deschenes, M., Levesque, P. L., McElhinny, K. M., Brady, G. J., ... Arnold, M. S. (2015). Direct oriented growth of armchair graphene nanoribbons on germanium. Nature Communications, 6. doi:10.1038/ncomms9006
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Abstract

Graphene can be transformed from a semimetal into a semiconductor if it is confined into nanoribbons narrower than 10nm with controlled crystallographic orientation and well-defined armchair edges. However, the scalable synthesis of nanoribbons with this precision directly on insulating or semiconducting substrates has not been possible. Here we demonstrate the synthesis of graphene nanoribbons on Ge(001) via chemical vapour deposition. The nanoribbons are self-aligning 3 degrees from the Ge &lt; 110 &gt; directions, are self-defining with predominantly smooth armchair edges, and have tunable width to &lt;10 nm and aspect ratio to &gt;70. In order to realize highly anisotropic ribbons, it is critical to operate in a regime in which the growth rate in the width direction is especially slow, &lt;5 nm h(-1). This directional and anisotropic growth enables nanoribbon fabrication directly on conventional semiconductor wafer platforms and, therefore, promises to allow the integration of nanoribbons into future hybrid integrated circuits.

Uncontrolled Keywords

Nanotubes, Carbon; Graphite; Germanium; Growth; Semiconductors; Synthesis of graphene

Open Access document in PolyPublie
Subjects: 1800 Génie chimique > 1800 Génie chimique
3100 Physique > 3100 Physique
Department: Département de génie physique
Research Center: Non applicable
Funders: DOE Office of Science Early Career Research Program, DOE SISGR, Natural Science and Engineering Research Council, University of Wisconsin Materials Research Science and Engineering Center (MRSEC), DOE, Department of Defense (DOD) Air Force Office of Scientific Research through the National Defense Science and Engineering Graduate Fellowship, National Science Foundation Graduate Research Fellowships, 3M Graduate Fellowship
Grant number: DE-SC0006414, DE-FG02-09ER16109, DMR-1121288, DE-FG02-03ER46028, 32 CFR 168a
Date Deposited: 06 Nov 2018 13:49
Last Modified: 07 Nov 2018 01:20
PolyPublie URL: https://publications.polymtl.ca/3479/
Document issued by the official publisher
Journal Title: Nature Communications (vol. 6)
Publisher: Macmillan Publishers Limited
Official URL: https://doi.org/10.1038/ncomms9006

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