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Title: Healing of graphene on single crystalline Ni(111) films

The annealing of graphene layers grown on 150 nm thick single crystal Ni(111) films was investigated in situ by low energy electron microscopy and photoemission electron microscopy. After growth, by means of chemical vapor deposition of ethylene, the graphene layers consist of several domains showing different orientations with respect to the underlying Ni surface and also of small bilayer areas. It is shown that, in a controlled process, the rotated domains can be transformed into lattice-aligned graphene, and the bilayer areas can be selectively dissolved, so that exclusively the aligned monolayer graphene is obtained. The ordering mechanism involves transport of C atoms across the surface and solution in the bulk.
Authors:
;  [1] ; ;  [2] ;  [3] ; ;  [4] ;  [5]
  1. Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 Munich (Germany)
  2. Lehrstuhl für Technische Physik, Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058 Erlangen (Germany)
  3. (Germany)
  4. Institut für Physik, Universität Augsburg, Universitätsstr. 1 Nord, 86159 Augsburg (Germany)
  5. Institut für Physik, Technische Universität Chemnitz, Reichenhainer Str. 70, 09126 Chemnitz (Germany)
Publication Date:
OSTI Identifier:
22391942
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNEALING; CHEMICAL VAPOR DEPOSITION; ELECTRON MICROSCOPY; ETHYLENE; FILMS; GRAPHENE; LAYERS; MONOCRYSTALS; NICKEL; PHOTOEMISSION; SURFACES