St Andrews Research Repository

View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

Size-Selective Carbon Nanoclusters as Precursors to the Growth of Epitaxial Graphene

View/Open
NanoLetters_2011_RSchaub.pdf (871.8Kb)
Date
09/02/2011
Author
Wang, Bo
Ma, Xiufang
Caffio, Marco
Schaub, Renald
Li, Wei-Xue
Keywords
QD Chemistry
Metadata
Show full item record
Abstract
The nucleation and growth mechanisms of graphene on Rh(111) via temperature-programmed growth of C2H4 are studied by scanning tunneling microscopy and spectroscopy, and by density functional theory calculations. By combining our experimental and first principles approaches, we show that carbon nanoislands form in the initial stages of graphene growth, possessing an exclusive size of seven honeycomb carbon units (hereafter labeled as 7C6 ). These clusters adopt a domelike hexagonal shape indicating that bonding to the substrate is localized on the peripheral C atoms. Smoluchowski ripening is identified as the dominant mechanism leading to the formation of graphene, with the size-selective carbon islands as precursors. Control experiments and calculations, whereby coronene molecules, the hydrogenated analogues of 7C6 , are deposited on Rh(111), provide an unambiguous structural and chemical identification of the 7C6 building blocks.
Citation
Wang , B , Ma , X , Caffio , M , Schaub , R & Li , W-X 2011 , ' Size-Selective Carbon Nanoclusters as Precursors to the Growth of Epitaxial Graphene ' Nano Letters , vol 11 , no. 2 , pp. 424-430 . DOI: 10.1021/nl103053t
Publication
Nano Letters
Status
Peer reviewed
DOI
http://dx.doi.org/10.1021/nl103053t
ISSN
1530-6984
Type
Journal article
Rights
Copyright © 2011, American Chemical Society. This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Nano Letters after peer review. To access the final edited and published work, see http://pubs.acs.org/doi/abs/10.1021/nl103053t
Collections
  • University of St Andrews Research
  • Chemistry Research
URI
http://hdl.handle.net/10023/4493

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

How to submit research papers

The full text of research papers can be submitted to the repository via PURE, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter