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

Guofang Zhong, Junwei Yang, Hisashi Sugime, Rahul Rao, Jianwei Zhao, Dameng Liu, Avetik Harutyunyan, John Robertson

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Abstract

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 AlOx 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 AlOx on exposure to air and during annealing. Most importantly, such a thin AlOx 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.

Original languageEnglish
Pages (from-to)624-632
Number of pages9
JournalCarbon
Volume98
DOIs
Publication statusPublished - 2016 Mar 1
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Zhong, G., Yang, J., Sugime, H., Rao, R., Zhao, J., Liu, D., Harutyunyan, A., & Robertson, J. (2016). Growth of high quality, high density single-walled carbon nanotube forests on copper foils. Carbon, 98, 624-632. https://doi.org/10.1016/j.carbon.2015.11.047