Open AccessMetal-catalyzed crystallization of amorphous carbon to graphene
Author(s) -
Maxwell Zheng,
Kuniharu Takei,
Benjamin Hsia,
Hui Fang,
Xiaobo Zhang,
Nicola Ferralis,
Hyunhyub Ko,
YuLun Chueh,
Yuegang Zhang,
Roya Maboudian,
Ali Javey
Publication year - 2010
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.3318263
Subject(s) - graphene , chemical vapor deposition , materials science , crystallization , amorphous carbon , amorphous solid , raman spectroscopy , chemical engineering , carbon fibers , annealing (glass) , nanotechnology , graphene oxide paper , carbon film , graphene nanoribbons , thin film , composite material , chemistry , composite number , organic chemistry , optics , engineering , physics
Metal-catalyzed crystallization of amorphous carbon to graphene by thermal annealing is demonstrated. In this "limited source" process scheme, the thickness of the precipitated graphene is directly controlled by the thickness of the initial amorphous carbon layer. This is in contrast to chemical vapor deposition processes, where the carbon source is virtually unlimited and controlling the number of graphene layers depends on the tight control over a number of deposition parameters. Based on the Raman analysis, the quality of graphene is comparable to other synthesis methods found in the literature, such as chemical vapor deposition. The ability to synthesize graphene sheets with tunable thickness over large areas presents an important progress toward their eventual integration for various technological applications.open826
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