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Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction

[Image: see text] The dynamics of the graphene–catalyst interaction during chemical vapor deposition are investigated using in situ, time- and depth-resolved X-ray photoelectron spectroscopy, and complementary grand canonical Monte Carlo simulations coupled to a tight-binding model. We thereby revea...

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Autores principales: Weatherup, Robert S., Amara, Hakim, Blume, Raoul, Dlubak, Bruno, Bayer, Bernhard C., Diarra, Mamadou, Bahri, Mounib, Cabrero-Vilatela, Andrea, Caneva, Sabina, Kidambi, Piran R., Martin, Marie-Blandine, Deranlot, Cyrile, Seneor, Pierre, Schloegl, Robert, Ducastelle, François, Bichara, Christophe, Hofmann, Stephan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2014
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4195372/
https://www.ncbi.nlm.nih.gov/pubmed/25188018
http://dx.doi.org/10.1021/ja505454v
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author Weatherup, Robert S.
Amara, Hakim
Blume, Raoul
Dlubak, Bruno
Bayer, Bernhard C.
Diarra, Mamadou
Bahri, Mounib
Cabrero-Vilatela, Andrea
Caneva, Sabina
Kidambi, Piran R.
Martin, Marie-Blandine
Deranlot, Cyrile
Seneor, Pierre
Schloegl, Robert
Ducastelle, François
Bichara, Christophe
Hofmann, Stephan
author_facet Weatherup, Robert S.
Amara, Hakim
Blume, Raoul
Dlubak, Bruno
Bayer, Bernhard C.
Diarra, Mamadou
Bahri, Mounib
Cabrero-Vilatela, Andrea
Caneva, Sabina
Kidambi, Piran R.
Martin, Marie-Blandine
Deranlot, Cyrile
Seneor, Pierre
Schloegl, Robert
Ducastelle, François
Bichara, Christophe
Hofmann, Stephan
author_sort Weatherup, Robert S.
collection PubMed
description [Image: see text] The dynamics of the graphene–catalyst interaction during chemical vapor deposition are investigated using in situ, time- and depth-resolved X-ray photoelectron spectroscopy, and complementary grand canonical Monte Carlo simulations coupled to a tight-binding model. We thereby reveal the interdependency of the distribution of carbon close to the catalyst surface and the strength of the graphene–catalyst interaction. The strong interaction of epitaxial graphene with Ni(111) causes a depletion of dissolved carbon close to the catalyst surface, which prevents additional layer formation leading to a self-limiting graphene growth behavior for low exposure pressures (10(–6)–10(–3) mbar). A further hydrocarbon pressure increase (to ∼10(–1) mbar) leads to weakening of the graphene–Ni(111) interaction accompanied by additional graphene layer formation, mediated by an increased concentration of near-surface dissolved carbon. We show that growth of more weakly adhered, rotated graphene on Ni(111) is linked to an initially higher level of near-surface carbon compared to the case of epitaxial graphene growth. The key implications of these results for graphene growth control and their relevance to carbon nanotube growth are highlighted in the context of existing literature.
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spelling pubmed-41953722014-10-13 Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction Weatherup, Robert S. Amara, Hakim Blume, Raoul Dlubak, Bruno Bayer, Bernhard C. Diarra, Mamadou Bahri, Mounib Cabrero-Vilatela, Andrea Caneva, Sabina Kidambi, Piran R. Martin, Marie-Blandine Deranlot, Cyrile Seneor, Pierre Schloegl, Robert Ducastelle, François Bichara, Christophe Hofmann, Stephan J Am Chem Soc [Image: see text] The dynamics of the graphene–catalyst interaction during chemical vapor deposition are investigated using in situ, time- and depth-resolved X-ray photoelectron spectroscopy, and complementary grand canonical Monte Carlo simulations coupled to a tight-binding model. We thereby reveal the interdependency of the distribution of carbon close to the catalyst surface and the strength of the graphene–catalyst interaction. The strong interaction of epitaxial graphene with Ni(111) causes a depletion of dissolved carbon close to the catalyst surface, which prevents additional layer formation leading to a self-limiting graphene growth behavior for low exposure pressures (10(–6)–10(–3) mbar). A further hydrocarbon pressure increase (to ∼10(–1) mbar) leads to weakening of the graphene–Ni(111) interaction accompanied by additional graphene layer formation, mediated by an increased concentration of near-surface dissolved carbon. We show that growth of more weakly adhered, rotated graphene on Ni(111) is linked to an initially higher level of near-surface carbon compared to the case of epitaxial graphene growth. The key implications of these results for graphene growth control and their relevance to carbon nanotube growth are highlighted in the context of existing literature. American Chemical Society 2014-09-04 2014-10-01 /pmc/articles/PMC4195372/ /pubmed/25188018 http://dx.doi.org/10.1021/ja505454v Text en Copyright © 2014 American Chemical Society Terms of Use CC-BY (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html)
spellingShingle Weatherup, Robert S.
Amara, Hakim
Blume, Raoul
Dlubak, Bruno
Bayer, Bernhard C.
Diarra, Mamadou
Bahri, Mounib
Cabrero-Vilatela, Andrea
Caneva, Sabina
Kidambi, Piran R.
Martin, Marie-Blandine
Deranlot, Cyrile
Seneor, Pierre
Schloegl, Robert
Ducastelle, François
Bichara, Christophe
Hofmann, Stephan
Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction
title Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction
title_full Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction
title_fullStr Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction
title_full_unstemmed Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction
title_short Interdependency of Subsurface Carbon Distribution and Graphene–Catalyst Interaction
title_sort interdependency of subsurface carbon distribution and graphene–catalyst interaction
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4195372/
https://www.ncbi.nlm.nih.gov/pubmed/25188018
http://dx.doi.org/10.1021/ja505454v
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