Direct oriented growth of armchair graphene nanoribbons on germanium
Graphene can be transformed from a semimetal into a semiconductor if it is confined into nanoribbons narrower than 10 nm with controlled crystallographic orientation and well-defined armchair edges. However, the scalable synthesis of nanoribbons with this precision directly on insulating or semicond...
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Nature Publishing Group
2015
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4918381/ |
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pubmed-49183812016-07-07 Direct oriented growth of armchair graphene nanoribbons on germanium Jacobberger, Robert M. Kiraly, Brian Fortin-Deschenes, Matthieu Levesque, Pierre L. McElhinny, Kyle M. Brady, Gerald J. Rojas Delgado, Richard Singha Roy, Susmit Mannix, Andrew Lagally, Max G. Evans, Paul G. Desjardins, Patrick Martel, Richard Hersam, Mark C. Guisinger, Nathan P. Arnold, Michael S. Article Graphene can be transformed from a semimetal into a semiconductor if it is confined into nanoribbons narrower than 10 nm 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° from the Ge〈110〉 directions, are self-defining with predominantly smooth armchair edges, and have tunable width to <10 nm and aspect ratio to >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, <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. Nature Publishing Group 2015-08-10 /pmc/articles/PMC4918381/ /pubmed/26258594 http://dx.doi.org/10.1038/ncomms9006 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Jacobberger, Robert M. Kiraly, Brian Fortin-Deschenes, Matthieu Levesque, Pierre L. McElhinny, Kyle M. Brady, Gerald J. Rojas Delgado, Richard Singha Roy, Susmit Mannix, Andrew Lagally, Max G. Evans, Paul G. Desjardins, Patrick Martel, Richard Hersam, Mark C. Guisinger, Nathan P. Arnold, Michael S. |
| spellingShingle |
Jacobberger, Robert M. Kiraly, Brian Fortin-Deschenes, Matthieu Levesque, Pierre L. McElhinny, Kyle M. Brady, Gerald J. Rojas Delgado, Richard Singha Roy, Susmit Mannix, Andrew Lagally, Max G. Evans, Paul G. Desjardins, Patrick Martel, Richard Hersam, Mark C. Guisinger, Nathan P. Arnold, Michael S. Direct oriented growth of armchair graphene nanoribbons on germanium |
| author_facet |
Jacobberger, Robert M. Kiraly, Brian Fortin-Deschenes, Matthieu Levesque, Pierre L. McElhinny, Kyle M. Brady, Gerald J. Rojas Delgado, Richard Singha Roy, Susmit Mannix, Andrew Lagally, Max G. Evans, Paul G. Desjardins, Patrick Martel, Richard Hersam, Mark C. Guisinger, Nathan P. Arnold, Michael S. |
| author_sort |
Jacobberger, Robert M. |
| title |
Direct oriented growth of armchair graphene nanoribbons on germanium |
| title_short |
Direct oriented growth of armchair graphene nanoribbons on germanium |
| title_full |
Direct oriented growth of armchair graphene nanoribbons on germanium |
| title_fullStr |
Direct oriented growth of armchair graphene nanoribbons on germanium |
| title_full_unstemmed |
Direct oriented growth of armchair graphene nanoribbons on germanium |
| title_sort |
direct oriented growth of armchair graphene nanoribbons on germanium |
| description |
Graphene can be transformed from a semimetal into a semiconductor if it is confined into nanoribbons narrower than 10 nm 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° from the Ge〈110〉 directions, are self-defining with predominantly smooth armchair edges, and have tunable width to <10 nm and aspect ratio to >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, <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. |
| publisher |
Nature Publishing Group |
| publishDate |
2015 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4918381/ |
| _version_ |
1613598762488299520 |