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Title: Influence of lattice orientation on growth and structure of graphene on Cu(001)

Abstract

We have used low-energy electron microscopy (LEEM) and diffraction (LEED) to examine the significance of lattice orientation in graphene growth on Cu(0 0 1). Individual graphene domains undergo anisotropic growth on the Cu surface, and develop into lens shapes with their long axes roughly aligned with Cu <1 0 0> in-plane directions. Furthermore, the long axis of a lens-shaped domain is only rarely oriented along a C <1 1> direction, suggesting that carbon attachment at “zigzag” graphene island edges is unfavorable. A kink-mediated adatom attachment process is consistent with the behavior observed here and reported in the literature. Likewise, the details of the ridged moiré pattern formed by the superposition of the graphene lattice on the (0 0 1) Cu surface also evolve with the graphene lattice orientation, and are predicted well by a simple geometric model. Managing the kink-mediated growth mode of graphene on Cu(0 0 1) will be necessary for the continued improvement of this graphene synthesis technique.

Authors:
 [1];  [2];  [2];  [2];  [1]
  1. Univ. of California, Berkeley, CA (United States)
  2. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1121946
Alternate Identifier(s):
OSTI ID: 1355800
Report Number(s):
SAND2013-10323J
Journal ID: ISSN 0008-6223; PII: S000862231500264X
Grant/Contract Number:  
AC04-94AL85000; De-Ac04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 90; Journal Issue: C; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Wofford, Joseph M., Nie, Shu, Thürmer, Konrad, McCarty, Kevin F., and Dubon, Oscar D. Influence of lattice orientation on growth and structure of graphene on Cu(001). United States: N. p., 2015. Web. doi:10.1016/j.carbon.2015.03.056.
Wofford, Joseph M., Nie, Shu, Thürmer, Konrad, McCarty, Kevin F., & Dubon, Oscar D. Influence of lattice orientation on growth and structure of graphene on Cu(001). United States. doi:10.1016/j.carbon.2015.03.056.
Wofford, Joseph M., Nie, Shu, Thürmer, Konrad, McCarty, Kevin F., and Dubon, Oscar D. Tue . "Influence of lattice orientation on growth and structure of graphene on Cu(001)". United States. doi:10.1016/j.carbon.2015.03.056. https://www.osti.gov/servlets/purl/1121946.
@article{osti_1121946,
title = {Influence of lattice orientation on growth and structure of graphene on Cu(001)},
author = {Wofford, Joseph M. and Nie, Shu and Thürmer, Konrad and McCarty, Kevin F. and Dubon, Oscar D.},
abstractNote = {We have used low-energy electron microscopy (LEEM) and diffraction (LEED) to examine the significance of lattice orientation in graphene growth on Cu(0 0 1). Individual graphene domains undergo anisotropic growth on the Cu surface, and develop into lens shapes with their long axes roughly aligned with Cu <1 0 0> in-plane directions. Furthermore, the long axis of a lens-shaped domain is only rarely oriented along a C <1 1> direction, suggesting that carbon attachment at “zigzag” graphene island edges is unfavorable. A kink-mediated adatom attachment process is consistent with the behavior observed here and reported in the literature. Likewise, the details of the ridged moiré pattern formed by the superposition of the graphene lattice on the (0 0 1) Cu surface also evolve with the graphene lattice orientation, and are predicted well by a simple geometric model. Managing the kink-mediated growth mode of graphene on Cu(0 0 1) will be necessary for the continued improvement of this graphene synthesis technique.},
doi = {10.1016/j.carbon.2015.03.056},
journal = {Carbon},
number = C,
volume = 90,
place = {United States},
year = {Tue Mar 31 00:00:00 EDT 2015},
month = {Tue Mar 31 00:00:00 EDT 2015}
}

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