期刊
APPLIED PHYSICS LETTERS
卷 100, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4729150
关键词
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资金
- Office of Naval Research [N00014-10-1-0668, N00014-11-1-0779]
- National Science Foundation [DMR-1204924]
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1204924] Funding Source: National Science Foundation
Synthesis of bilayer graphene by chemical vapor deposition is of importance for graphene-based field effect devices. Here, we demonstrate that bilayer graphene preferentially grows by carbon-segregation under graphene sheets that are rotated relative to a Ni(111) substrate. Rotated graphene monolayer films can be synthesized at growth temperatures above 650 degrees C on a Ni(111) thin-film. The segregated second graphene layer is in registry with the Ni(111) substrate and this suppresses further C-segregation, effectively self-limiting graphene formation to two layers. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729150]
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