Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.diamond.2012.02.014
Title: Comparison of the mechanism of low defect few-layer graphene fabricated on different metals by pulsed laser deposition
Authors: Koh, A.T.T.
Foong, Y.M.
Chua, D.H.C. 
Keywords: Few-layer graphene
Pulsed laser
Raman spectroscopy
Segregation
Issue Date: May-2012
Citation: Koh, A.T.T., Foong, Y.M., Chua, D.H.C. (2012-05). Comparison of the mechanism of low defect few-layer graphene fabricated on different metals by pulsed laser deposition. Diamond and Related Materials 25 : 98-102. ScholarBank@NUS Repository. https://doi.org/10.1016/j.diamond.2012.02.014
Abstract: Carbon segregation using metal substrates has been given increasing attention as an alternative graphene growth method due to its reduced temperature. However, not every metal behaves in the same manner during the process, hence it is imperative to study their effectiveness when using this growth method. In this paper, few-layer graphene was fabricated on metal substrates with an energetic carbon source supplied by pulsed laser deposition. The ability of Ni, Cu, Co and Fe thin films to form graphene through segregation was investigated. Graphene was fabricated on Ni and absent in Cu, Co and Fe under a specific cooling profile. This was attributed to either low solubility of carbon in Cu and Fe or low carbon diffusion coefficient in Co. However, by adjusting the cooling rate to cater to the carbon diffusion coefficient of Co, low defect few-layer graphene with large substrate coverage was obtained. The results showed that when using PLD, a metal with sufficient carbon solubility is desired over its catalytic ability. The reasons behind the observed phenomena are also discussed. © 2012 Elsevier B.V. All rights reserved.
Source Title: Diamond and Related Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/64827
ISSN: 09259635
DOI: 10.1016/j.diamond.2012.02.014
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

27
checked on Sep 17, 2018

WEB OF SCIENCETM
Citations

25
checked on Sep 5, 2018

Page view(s)

53
checked on Sep 22, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.