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      Lattice-Oriented Catalytic Growth of Graphene Nanoribbons on Heteroepitaxial Nickel Films

      , , , , ,
      ACS Nano
      American Chemical Society (ACS)

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          Abstract

          Graphene nanoribbons (GNRs) are a promising material for electronic applications, because quantum confinement in a one-dimensional nanostructure can potentially open the band gap of graphene. However, it is still a challenge to synthesize high-quality GNRs by a bottom-up approach without relying on lithographic techniques. In this work, we demonstrate lattice-oriented catalytic growth of single-layer GNRs on the surface of a heteroepitaxial Ni film. Catalytic decomposition of a poly(methyl methacrylate) film on the Ni(100) film at 1000 °C gives narrow nanoribbons with widths of 20-30 nm, which are aligned along either [011] or [011] directions of the Ni lattice. Furthermore, low-energy electron microscope (LEEM) analysis reveals that orientation of carbon hexagons in these GNRs is highly controlled by the underlying Ni(100) lattice, leading to the formation of zigzag edges. This heteroepitaxial approach would pave a way to synthesize nanoribbons with controlled orientation for future development of electronic devices based on graphene nanostructures.

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          Author and article information

          Journal
          ACS Nano
          ACS Nano
          American Chemical Society (ACS)
          1936-0851
          1936-086X
          November 27 2013
          November 19 2013
          : 7
          : 12
          : 10825-10833
          Article
          10.1021/nn405122r
          24206265
          10da1212-3d82-4271-8cf9-3fece5864e9f
          © 2013
          History

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