Nano Research

, Volume 4, Issue 10, pp 963–970

Length-sorted semiconducting carbon nanotubes for high-mobility thin film transistors

  • Yasumitsu Miyata
  • Kazunari Shiozawa
  • Yuki Asada
  • Yutaka Ohno
  • Ryo Kitaura
  • Takashi Mizutani
  • Hisanori Shinohara
Research Article


We have developed a process for chemical purification of carbon nanotubes for solution-processable thin-film transistors (TFTs) having high mobility. Films of the purified carbon nanotubes fabricated by simple drop coating showed carrier mobilities as high as 164 cm2V−1s−1, normalized transconductances of 0.78 Sm−1, and on/off current ratios of 106. Such high performance requires the preparation of a suspension of micrometer-long and highly purified semiconducting single-walled carbon nanotubes (SWCNTs). Our purification process includes length and electronic-type selective trapping of SWCNTs using recycling gel filtration with a mixture of surfactants. The results provide an important milestone toward printed high-speed and large-area electronics with roll-to-roll and ink-jet device fabrication.


Single-walled carbon nanotubes separation thin-film transistors gel filtration dispersion optical absorption carrier mobility 


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Supplementary material

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Yasumitsu Miyata
    • 1
  • Kazunari Shiozawa
    • 1
  • Yuki Asada
    • 1
  • Yutaka Ohno
    • 2
  • Ryo Kitaura
    • 1
  • Takashi Mizutani
    • 2
  • Hisanori Shinohara
    • 1
  1. 1.Department of Chemistry and Institute for Advanced ResearchNagoya UniversityNagoyaJapan
  2. 2.Department of Quantum EngineeringNagoya UniversityNagoyaJapan

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