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Large single crystals of graphene on melted copper using chemical vapor deposition
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Wu, Yimin A., Fan, Ye, Speller, Susannah, Creeth, Graham L., Sadowski, Jerzy T., He, Kuang, Robertson, Alex W., Allen, Christopher S. and Warner, Jamie H. (2012) Large single crystals of graphene on melted copper using chemical vapor deposition. ACS Nano, 6 (6). pp. 5010-5017. doi:10.1021/nn3016629 ISSN 1936-0851.
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Official URL: http://dx.doi.org/10.1021/nn3016629
Abstract
A simple method is presented for synthesizing large single crystal graphene domains on melted copper using atmospheric pressure chemical vapor deposition (CVD). This is achieved by performing the reaction above the melting point of copper (1090 °C) and using a molybdenum or tungsten support to prevent balling of the copper from dewetting. By controlling the amount of hydrogen during growth, individual single crystal domains of monolayer graphene greater than 200 μm are produced within a continuous film. Stopping growth before a complete film is formed reveals individual hexagonal domains of graphene that are epitaxially aligned in their orientation. Angular resolved photoemission spectroscopy is used to show that the graphene grown on copper exhibits a linear dispersion relationship and no sign of doping. HRTEM and electron diffraction reveal a uniform high quality crystalline atomic structure of monolayer graphene.
Item Type: | Journal Article | ||||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||
Journal or Publication Title: | ACS Nano | ||||||||||
Publisher: | American Chemical Society | ||||||||||
ISSN: | 1936-0851 | ||||||||||
Official Date: | 26 June 2012 | ||||||||||
Dates: |
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Volume: | 6 | ||||||||||
Number: | 6 | ||||||||||
Page Range: | pp. 5010-5017 | ||||||||||
DOI: | 10.1021/nn3016629 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Copyright Holders: | American Chemical Society | ||||||||||
Related URLs: |
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