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Adsorption-induced conversion of the carbon nanotube field effect transistor from ambipolar to unipolar behavior

  • Donghun Kang
  • , Noejung Park
  • , Jaewoong Hyun
  • , Eunju Bae
  • , Juhye Ko
  • , Jujin Kim
  • , Wanjun Park*
  • *Corresponding author for this work
  • Samsung

Research output: Contribution to journalJournal articlepeer-review

Abstract

We investigate ambipolar to unipolar transition by the effect of ambient air on the carbon nanotube field-effect transistor. A unipolar transport property of the double-walled nanotube field-effect transistor and its conversion from ambipolar behavior are observed. We suggest that adsorptions of oxygen molecules, whose lowest-unoccupied-molecular-orbital state is around the midgap of the carbon nanotube, could suppress the electron channel formation and, consequently, result in the unipolar transport behavior.

Original languageEnglish
Article number093105
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number9
DOIs
StatePublished - 2005.02.28

Quacquarelli Symonds(QS) Subject Topics

  • Physics & Astronomy

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