期刊
ACS NANO
卷 7, 期 8, 页码 7028-7033出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn402229t
关键词
graphene; scanning tunneling microscopy; surface kinetics; chemical vapor deposition
类别
资金
- Dutch Science Foundation NWO/FOM
- ERC
In situ scanning tunneling microscopy observations of, graphene formation on Rh(111) show that the moire pattern between the lattices of the overlayer and substrate has a decisive influence on the growth. The process is modulated in the large unit cells of the moire pattern. We distinguish two steps: the addition of a unit cell that introduces one or more new kinks and the addition of further unit cells that merely advance the position of an existing kink. Kink creation is the rate-limiting step, with kink creation at small-angle, concave corners in the graphene overlayer exhibiting the lower barrier.
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