期刊
APPLIED PHYSICS LETTERS
卷 95, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3224913
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-
资金
- U.S. Department of Energy [DE-AC02-98CH1-886]
Monolayer graphene has been grown on polycrystalline Ru thin films on SiO(2)/Si substrates. The Ru films have columnar structure with strongly aligned grains exposing flat (0001) surface facets. Adjacent grains show small relative tilts of their (0001) axes and variations in in-plane orientation. Graphene layers grown on this template cover the entire surface and have uniform monolayer thickness. Analysis of the graphene/Ru moire structure shows that monocrystalline graphene domains are coherent across a large number of substrate grains. Hence, the size of monolayer graphene domains is not limited by grain boundaries in the metal template. (C) 2009 American Institute of Physics. [doi:10.1063/1.3224913]
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