CUED Publications database

Growth of high quality, high density single-walled carbon nanotube forests on copper foils

Zhong, G and Yang, J and Sugime, H and Rao, R and Zhao, J and Liu, D and Harutyunyan, A and Robertson, J (2016) Growth of high quality, high density single-walled carbon nanotube forests on copper foils. Carbon, 98. pp. 624-632. ISSN 0008-6223

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Abstract

© 2015 Elsevier Ltd. All rights reserved. We demonstrate the growth of high quality single-walled carbon nanotube (SWCNT) forests on commercial Cu foils by cold-wall chemical vapor deposition. Time-of-flight secondary ion mass spectrometry was employed to study the effect of annealing on the catalyst evolution with or without an AlO x barrier layer. X-ray photoelectron spectroscopy was used to investigate the chemical states of the catalyst and the barrier layer. SWCNT forests can be reproducibly grown on Cu foils sputter-coated with Al and Fe layers as thin as 6 nm and 0.4 nm, respectively. Al transforms into AlO x on exposure to air and during annealing. Most importantly, such a thin AlO x barrier layer ensures not only the growth of SWCNTs but also an Ohmic contact between the as grown SWCNTs and the Cu base as measured by a two-point probe station. The as-grown SWCNTs exhibit a bimodal distribution of diameters ranging from 0.6 to 4.5 nm, with two peaks centered at 0.8 nn and 2.6 nm, respectively.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Electronic Devices & Materials
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 20:01
Last Modified: 07 Sep 2017 01:43
DOI: