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 language | English |
|---|---|
| Pages (from-to) | 624-632 |
| Number of pages | 9 |
| Journal | Carbon |
| Volume | 98 |
| DOIs | |
| Publication status | Published - 2016 Mar 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemistry(all)
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Growth of high quality, high density single-walled carbon nanotube forests on copper foils. / Zhong, Guofang; Yang, Junwei; Sugime, Hisashi; Rao, Rahul; Zhao, Jianwei; Liu, Dameng; Harutyunyan, Avetik; Robertson, John.
In: Carbon, Vol. 98, 01.03.2016, p. 624-632.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Growth of high quality, high density single-walled carbon nanotube forests on copper foils
AU - Zhong, Guofang
AU - Yang, Junwei
AU - Sugime, Hisashi
AU - Rao, Rahul
AU - Zhao, Jianwei
AU - Liu, Dameng
AU - Harutyunyan, Avetik
AU - Robertson, John
PY - 2016/3/1
Y1 - 2016/3/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.carbon.2015.11.047
DO - 10.1016/j.carbon.2015.11.047
M3 - Article
VL - 98
SP - 624
EP - 632
JO - Carbon
JF - Carbon
SN - 0008-6223
ER -