期刊
NANO LETTERS
卷 9, 期 10, 页码 3646-3650出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl901890x
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资金
- DOE [DE-FC36-05GO15103]
- ONR [N00014-09-1-0163]
The density of the aligned single-walled carbon nanotubes (SWNTs) grown on quartz substrates is an important factor for the performance of fabricated electronic devices. It was discovered that the addition of a sulfur-containing compound (thiophene) to the reaction mixture improved the density of SWNTs by a factor of 2 or more, from similar to 2-4 SWNTs/mu m to 6-8 SWNTs/mu m under similar growth conditions. It was also observed that along with the increase in nanotube density, the cleanness of the samples Improved as well. These effects were demonstrated over a large range of growth conditions, indicating that the addition sulfur makes the growth processes more favorable for the nucleation and growth of aligned SWNTs.
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