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Journal of Nanomaterials
Volume 2013, Article ID 393724, 6 pages
Research Article

Effect of Catalyst Morphology on the Quality of CVD Grown Graphene

1Graduate Institute of Opto-Mechatronics, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi 62102, Taiwan
2Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan

Received 15 March 2013; Revised 9 July 2013; Accepted 17 July 2013

Academic Editor: Nadya Mason

Copyright © 2013 Ya-Ping Hsieh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The strong interest in graphene has motivated large effort in the scalable production of high-quality material. The potential of chemical vapor deposition on Cu foil to produce such graphene is impeded by lacking understanding of the relation between catalyst properties and graphene performance. We here present a systematic analysis of the catalyst morphology and its effect on electrical properties of graphene. We find that nanometer sized particles increase the density of bilayer regions but have no significant effect on carrier transport. Long wavelength roughness (waviness), on the other hand, generates defective graphitic regions that deteriorate carrier mobility. These findings shed light on the graphene formation process on Cu substrates and open a route to improve graphene quality for electronics applications.