期刊
NANO LETTERS
卷 11, 期 5, 页码 1895-1900出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl103947x
关键词
Graphene; ruthenium; in situ; scanning tunneling microscopy; faceting; density functional theory
类别
资金
- European Commission through the Early Stage Researcher Training Network MONET
- Humboldt Foundation
- German Research Foundation (DFG) [1459]
The epitaxial growth of graphene by chemical vapor deposition of ethylene on a Ru(0001) surface was monitored by high-temperature scanning tunneling microscopy. The in situ data show that at low pressures and high temperatures the metal surface facets into large terraces, leading to much better ordered graphene layers than resulting from the known growth mode. Density functional theory calculations show that the single terrace growth mode can be understood from the energetics of the graphene-metal interaction.
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