Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30367
Title: Edge structural stability and kinetics of graphene chemical vapor deposition growth
Authors: Shu, H
Chen, X
Tao, X 
Ding, F 
Keywords: Chemical vapor deposition
Density functional theory
Edge reconstruction
Graphene
Issue Date: 2012
Publisher: American Chemical Society
Source: ACS Nano, 2012, v. 6, no. 4, p. 3243-3250 How to cite?
Journal: ACS nano 
Abstract: The energetics and growth kinetics of graphene edges during CVD growth on Cu(111) and other catalyst surfaces are explored by density functional theory (DFT) calculations. Different from graphene edges in vacuum, the reconstructions of both armchair (AC) and zigzag (ZZ) edges are energetically less stable because of the passivation of the edges by the catalytic surface. Furthermore, we predicated that, on the most used Cu(111) catalytic surface, each AC-like site on the edge is intended to be passivated by a Cu atom. Such an unexpected passivation significantly lowers the barrier of incorporating carbon atoms onto the graphene edge from 2.5 to 0.8 eV and therefore results in a very fast growth of the AC edge. These theoretical results are successfully applied to explain the broad experimental observations that the ZZ egde is the dominating edge type of growing graphene islands on a Cu surface.
URI: http://hdl.handle.net/10397/30367
ISSN: 1936-0851
EISSN: 1936-086X
DOI: 10.1021/nn300726r
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