期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 40, 页码 17321-17325出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp905134b
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资金
- European Community [ERAS-CT-2003-980409]
- EPSRC
- ESF
- Humboldt Foundation
- Royal Society
- Peterhouse, Cambridge
- Glasstone Fund
- Brasenose College, Oxford
- Austrian Academy of Science
The growth of tall, single-walled carbon nanotube (SWNT) forests is often believed to require the use of specific feedstocks (e.g., ethanol) or etchants (e.g., water). Here, oil the basis of mass spectrometry for hydrogen-diluted methane in a microwave plasma-enhanced chemical vapor deposition (PECVD) reactor, we develop a purely thermal CVD process tor SWNT forests without an etchant gas. The thermally grown SWNT forests are found to have a similar high quality, purify. growth rate, areal density, diameter, and chirality distribution as in the PECVD case. We Show that C2H2 is the main growth precursor, and Suggest more generally that feedstock conversion to C2H2 is of key importance to SWNT forest CVD. A reactive etchant, Such as water. atomic hydrogen, or hydroxyl radicals, can widen the SWNT forest deposition window but is not required in cold-wall reactors at low pressures.
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