Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 14, Pages 5232-5235Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja2008278
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Funding
- MOST of China [2011CB932601, 2011CB932604, 2008DFA51400]
- NSFC [50921004, 50872137]
- Aalto University through the Multidisciplinary Institute of Digitalization and Energy (MIDE)
- TEKES, Finland
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Semiconducting single-walled carbon nanotubes (s-SWCNTs) with a mean diameter of 1.6 nm were synthesized on a large scale by using oxygen-assisted floating catalyst chemical vapor deposition. The oxygen introduced can selectively etch metallic SWCNTs in situ, while the sulfur growth promoter functions in promoting the growth of SWCNTs with a large diameter. The electronic properties of the SWCNTs were characterized by laser Raman spectroscopy, absorption spectroscopy, and field effect transistor measurements. It was found that the content of s-SWCNTs in the samples was highly sensitive to the amount of oxygen introduced. Under optimum synthesis conditions, enriched s-SWCNTs can be obtained in milligram quantities per batch.
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