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 journalArticle

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 languageEnglish
Pages (from-to)703-708
Number of pages6
JournalNano Letters
Volume2
Issue number7
DOIs
Publication statusPublished - 2002 Jul 1
Externally publishedYes

Fingerprint

Single-walled carbon nanotubes (SWCN)
carbon nanotubes
synthesis
Chemical vapor deposition
vapor deposition
Nanoparticles
Fullerenes
nanoparticles
Chirality
ring structures
crops
Methane
Surveying
Field effect transistors
chirality
electronics
Electronic properties
Nanotubes
Crops
fullerenes

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes. / Kim, Woong; Choi, Hee Cheul; Shim, Moonsub; Li, Yiming; Wang, Dunwei; Dai, Hongjie.

In: Nano Letters, Vol. 2, No. 7, 01.07.2002, p. 703-708.

Research output: Contribution to journalArticle

Kim, Woong ; Choi, Hee Cheul ; Shim, Moonsub ; Li, Yiming ; Wang, Dunwei ; Dai, Hongjie. / Synthesis of Ultralong and High Percentage of Semiconducting Single-walled Carbon Nanotubes. In: Nano Letters. 2002 ; Vol. 2, No. 7. pp. 703-708.
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