Nano Research

, Volume 5, Issue 6, pp 388–394 | Cite as

Short channel field-effect transistors from highly enriched semiconducting carbon nanotubes

  • Justin Wu
  • Liming Xie
  • Guosong Hong
  • Hong En Lim
  • Boanerges Thendie
  • Yasumitsu Miyata
  • Hisanori Shinohara
  • Hongjie Dai
Research Article

Abstract

Semiconducting single-walled carbon nanotubes (s-SWNTs) with a purity of ∼98% have been obtained by gel filtration of arc-discharge grown SWNTs with diameters in the range 1.2–1.6 nm. Multi-laser Raman spectroscopy confirmed the presence of less than 2% of metallic SWNTs (m-SWNTs) in the s-SWNT enriched sample. Measurement of ∼50 individual tubes in Pd-contacted devices with channel length 200 nm showed on/off ratios of >104, conductances of 1.38–5.8 μS, and mobilities in the range 40–150 cm2·V/s. Short channel multi-tube devices with ∼100 tubes showed lower on/off ratios due to residual m-SWNTs, although the on-current was greatly increased relative to the devices made from individual tubes. Open image in new window

Keywords

Single-walled carbon nanotubes separation Raman spectroscopy field-effect transistor 

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Justin Wu
    • 1
  • Liming Xie
    • 1
  • Guosong Hong
    • 1
  • Hong En Lim
    • 2
  • Boanerges Thendie
    • 2
  • Yasumitsu Miyata
    • 2
  • Hisanori Shinohara
    • 2
  • Hongjie Dai
    • 1
  1. 1.Department of ChemistryStanford UniversityStanfordUSA
  2. 2.Department of Chemistry and Institute for Advanced ResearchNagoya UniversityNagoyaJapan

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