Ultra-High-Yield Growth of Vertical Single-Walled Carbon Nanotubes: Hidden Roles of Hydrogen and Oxygen

An oxygen-assisted hydrocarbon chemical vapor deposition method is developed to afford large-scale, highly reproducible, ultra-high-yield growth of vertical single-walled carbon nanotubes (V-SWNTs). It is revealed that reactive hydrogen species, inevitable in hydrocarbon-based growth, are damaging t...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 2005-11, Vol.102 (45), p.16141-16145
Main Authors: Zhang, Guangyu, Mann, David, Zhang, Li, Javey, Ali, Li, Yiming, Yenilmez, Erhan, Wang, Qian, James P. Mc Vittie, Yoshio Nishi, Gibbons, James, Dai, Hongjie
Format: Article
Language:English
Subjects:
Carbon
Carbon nanotubes
Catalysis
Chemistry
Hydrocarbons
Hydrogen
Instructional materials
Lead
Material films
Nanotubes
Oxygen
Physical Sciences
Water pressure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An oxygen-assisted hydrocarbon chemical vapor deposition method is developed to afford large-scale, highly reproducible, ultra-high-yield growth of vertical single-walled carbon nanotubes (V-SWNTs). It is revealed that reactive hydrogen species, inevitable in hydrocarbon-based growth, are damaging to the formation of$sp^{2}-like$SWNTs in a diameter-dependent manner. The addition of oxygen scavenges H species and provides a powerful control over the C/H ratio to favor SWNT growth. The revelation of the roles played by hydrogen and oxygen leads to a unified and universal optimum-growth condition for SWNTs. Further, a versatile method is developed to form V-SWNT films on any substrate, lifting a major substrate-type limitation for aligned SWNTs.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.0507064102