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

Research output: Contribution to journal › Article › peer-review

187 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
Externally published	Yes

ASJC Scopus subject areas

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

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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.",

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AU - Kim, Woong

AU - Choi, Hee Cheul

AU - Shim, Moonsub

AU - Li, Yiming

AU - Wang, Dunwei

AU - Dai, Hongjie

PY - 2002/7

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

Abstract

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