Graphene growth on polycrystalline Ru thin films
- 28 September 2009
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 95 (13), 133109
- https://doi.org/10.1063/1.3224913
Abstract
Monolayer graphene has been grown on polycrystalline Ru thin films on 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 moiré 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.
Keywords
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