Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes

Woong Kim; Hee Cheul Choi; Moonsub Shim; Yiming Li; Dunwei Wang; Hongjie Dai

doi:10.1021/nl025602q

Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes

Woong Kim, Hee Cheul Choi, Moonsub Shim, Yiming Li, Dunwei Wang, Hongjie Dai

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

184 Citations (Scopus)

Abstract

Two main results are reported here for single-walled carbon nanotubes (SWNTs) synthesized from well-controlled isolated catalytic Fe₂O₃ nanoparticles. The first is patterned growth of ultralong SWNTs (lengths up to 0.6 millimeters) by using a mixed methane and ethylene carbon source in chemical vapor deposition (CVD). Interesting loop and closed ring structures similar to those of fullerene "crop circles" are observed on these as-grown ultralong tubes. Second, surveying the electronic properties of individual SWNTs by transport measurements reveals that approximately 70% of individual SWNTs grown from isolated nanoparticles are semiconductors exhibiting field effect transistor (FET) characteristics. The distribution of CVD-grown SWNT chirality is elucidated for the first time, and implications to array-based nanotube electronics and sensors are discussed.

Original language	English
Pages (from-to)	703-708
Number of pages	6
Journal	Nano Letters
Volume	2
Issue number	7
DOIs	https://doi.org/10.1021/nl025602q
Publication status	Published - 2002 Jul

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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Kim, W., Choi, H. C., Shim, M., Li, Y., Wang, D., & Dai, H. (2002). Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes. Nano Letters, 2(7), 703-708. https://doi.org/10.1021/nl025602q

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