Continuity of Graphene on Polycrystalline Copper

Haider I. Rasool*, Emil B. Song, Matthew J. Allen, Jonathan K. Wassei, Richard B. Kaner, Kang L. Wang, Bruce H. Weiller, James K. Gimzewski

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

164 Citations (Scopus)

Abstract

The atomic structure of graphene on polycrystalline copper substrates has been studied using scanning tunneling microscopy. The graphene overlayer maintains a continuous pristine atomic structure over atomically flat planes, monatomic steps, edges, and vertices of the copper surface. We find that facets of different identities are overgrown with graphene's perfect carbon honeycomb lattice. Our observations suggest that growth models including a stagnant catalytic surface do not apply to graphene growth on copper. Contrary to current expectations, these results reveal that the growth of macroscopic pristine graphene is not limited by the underlying copper structure.

Original languageEnglish
Pages (from-to)251-256
Number of pages6
JournalNano Letters
Volume11
Issue number1
Early online date30 Nov 2010
DOIs
Publication statusPublished - Jan 2011

Keywords

  • Graphene
  • STM
  • epitaxy
  • materials
  • growth
  • FEW-LAYER GRAPHENE
  • EPITAXIAL GRAPHENE
  • LARGE-AREA
  • FILMS
  • ADSORPTION
  • SURFACE

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