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Controlled growth of large area multilayer graphene on copper by chemical vapour deposition

Kasap, Sibel and Khaksaran, Mohammad Hadi and Çelik, Süleyman and Özkaya, Hasan and Yanık, Cenk and Kaya, İsmet İnönü (2015) Controlled growth of large area multilayer graphene on copper by chemical vapour deposition. Physical Chemistry Chemical Physics, 17 (35). pp. 23081-23087. ISSN 1463-9076 (Print) 1463-9084 (Online)

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Official URL: http://dx.doi.org/10.1039/c5cp01436k

Abstract

The growth of nearly full coverage of multilayer graphene on the surface of a 99.8% purity copper foil has been experimentally studied. It has been shown that the film thickness can be controlled by a single parameter, the growth time, and growth can be extended until nearly full coverage of more than one layer graphene over the copper surface. The results are supported by scanning electron microscopy and Raman analysis together with optical transmittance and sheet resistance measurements. It has been verified that silicon oxide impurity particles within the copper act as catalysts and the seeds of multilayer graphene islands. The linear increase of the average thickness of graphene to the growth time has been attributed to the interplay between the mean distance between the impurities on the surface and the molecular mean free path in the process gas. A qualitative model is proposed to explain the microscopic mechanism of the multilayer growth on copper. These results contribute to the understanding of the chemical vapour deposition growth kinetics towards the objective of large area high quality graphene production with tuneable layer thickness.

Item Type:Article
Uncontrolled Keywords:graphene, cvd, growth
Subjects:Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Q Science > QC Physics > QC176-176.9 Solids. Solid state physics
ID Code:28651
Deposited By:İsmet İnönü Kaya
Deposited On:25 Dec 2015 14:20
Last Modified:25 Dec 2015 14:20

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