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From Permeation to Cluster Arrays : Graphene on Ir(111) Exposed to Carbon Vapor

Herbig, Charlotte; Knispel, Timo; Simon, Sabina; Schröder, Ulrike A; Martínez-Galera, Antonio J; Arman, Mohammad A. LU ; Teichert, Christian; Knudsen, Jan LU ; Krasheninnikov, Arkady V. and Michely, Thomas (2017) In Nano Letters 17(5). p.3105-3112
Abstract

Our scanning tunneling microscopy and X-ray photoelectron spectroscopy experiments along with first-principles calculations uncover the rich phenomenology and enable a coherent understanding of carbon vapor interaction with graphene on Ir(111). At high temperatures, carbon vapor not only permeates to the metal surface but also densifies the graphene cover. Thereby, in addition to underlayer graphene growth, upon cool down also severe wrinkling of the densified graphene cover is observed. In contrast, at low temperatures the adsorbed carbon largely remains on top and self-organizes into a regular array of fullerene-like, thermally highly stable clusters that are covalently bonded to the underlying graphene sheet. Thus, a new type of... (More)

Our scanning tunneling microscopy and X-ray photoelectron spectroscopy experiments along with first-principles calculations uncover the rich phenomenology and enable a coherent understanding of carbon vapor interaction with graphene on Ir(111). At high temperatures, carbon vapor not only permeates to the metal surface but also densifies the graphene cover. Thereby, in addition to underlayer graphene growth, upon cool down also severe wrinkling of the densified graphene cover is observed. In contrast, at low temperatures the adsorbed carbon largely remains on top and self-organizes into a regular array of fullerene-like, thermally highly stable clusters that are covalently bonded to the underlying graphene sheet. Thus, a new type of predominantly sp2-hybridized nanostructured and ultrathin carbon material emerges, which may be useful to encage or stably bind metal in finely dispersed form.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
bilayer graphene, carbon deposition, cluster, Graphene, wrinkle
in
Nano Letters
volume
17
issue
5
pages
8 pages
publisher
The American Chemical Society
external identifiers
  • scopus:85019201818
  • wos:000401307300053
ISSN
1530-6984
DOI
10.1021/acs.nanolett.7b00550
language
English
LU publication?
yes
id
bee75bf8-b663-4ccb-a825-4c0ea8d9e9c9
date added to LUP
2017-05-31 08:30:00
date last changed
2017-09-18 11:38:11
@article{bee75bf8-b663-4ccb-a825-4c0ea8d9e9c9,
  abstract     = {<p>Our scanning tunneling microscopy and X-ray photoelectron spectroscopy experiments along with first-principles calculations uncover the rich phenomenology and enable a coherent understanding of carbon vapor interaction with graphene on Ir(111). At high temperatures, carbon vapor not only permeates to the metal surface but also densifies the graphene cover. Thereby, in addition to underlayer graphene growth, upon cool down also severe wrinkling of the densified graphene cover is observed. In contrast, at low temperatures the adsorbed carbon largely remains on top and self-organizes into a regular array of fullerene-like, thermally highly stable clusters that are covalently bonded to the underlying graphene sheet. Thus, a new type of predominantly sp<sup>2</sup>-hybridized nanostructured and ultrathin carbon material emerges, which may be useful to encage or stably bind metal in finely dispersed form.</p>},
  author       = {Herbig, Charlotte and Knispel, Timo and Simon, Sabina and Schröder, Ulrike A and Martínez-Galera, Antonio J and Arman, Mohammad A. and Teichert, Christian and Knudsen, Jan and Krasheninnikov, Arkady V. and Michely, Thomas},
  issn         = {1530-6984},
  keyword      = {bilayer graphene,carbon deposition,cluster,Graphene,wrinkle},
  language     = {eng},
  month        = {05},
  number       = {5},
  pages        = {3105--3112},
  publisher    = {The American Chemical Society},
  series       = {Nano Letters},
  title        = {From Permeation to Cluster Arrays : Graphene on Ir(111) Exposed to Carbon Vapor},
  url          = {http://dx.doi.org/10.1021/acs.nanolett.7b00550},
  volume       = {17},
  year         = {2017},
}