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Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils SCOPUS

Title
Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
Authors
KIM, SEYOUNG
Date Issued
2009-06-05
Publisher
American Association for the Advancement of Science
Abstract
Graphene has been attracting great interest because of its distinctive band structure and physical properties. Today, graphene is limited to small sizes because it is produced mostly by exfoliating graphite. We grew large-area graphene films of the order of centimeters on copper substrates by chemical vapor deposition using methane. The films are predominantly single-layer graphene, with a small percentage (less than 5%) of the area having few layers, and are continuous across copper surface steps and grain boundaries. The low solubility of carbon in copper appears to help make this growth process self-limiting. We also developed graphene film transfer processes to arbitrary substrates, and dual-gated field-effect transistors fabricated on silicon/silicon dioxide substrates showed electron mobilities as high as 4050 square centimeters per volt per second at room temperature.
URI
https://oasis.postech.ac.kr/handle/2014.oak/103400
DOI
10.1126/science.1171245
ISSN
0036-8075
Article Type
Article
Citation
Science, vol. 324, no. 5932, page. 1312 - 1314, 2009-06-05
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