Electron transport in semiconducting carbon nanotubes with hetero-metallic contacts

Yongqiang Xue, Mark A Ratner

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We present an atomistic self-consistent study of the electronic and transport properties of semiconducting carbon nanotubes in contact with metal electrodes of different work functions, which shows simultaneous electron and hole doping inside the nanotube junction through contact-induced charge transfer. We find that the band lineup in the nanotube bulk region is determined by the effective work function difference between the nanotube channel and source/drain electrodes, while electron transmission through the SWNT junction is affected by the local band structure modulation at the two metal-nanotube interfaces, leading to an effective decoupling of interface and bulk effects in electron transport through nanotube junction devices.

Original languageEnglish
Pages (from-to)5-9
Number of pages5
JournalNanotechnology
Volume16
Issue number1
DOIs
Publication statusPublished - Jan 2005

Fingerprint

Carbon Nanotubes
Nanotubes
Carbon nanotubes
nanotubes
carbon nanotubes
electrons
Metals
Electrodes
electrodes
Electrons
Electronic properties
decoupling
Band structure
metals
Transport properties
Charge transfer
transport properties
charge transfer
Doping (additives)
Modulation

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Electron transport in semiconducting carbon nanotubes with hetero-metallic contacts. / Xue, Yongqiang; Ratner, Mark A.

In: Nanotechnology, Vol. 16, No. 1, 01.2005, p. 5-9.

Research output: Contribution to journalArticle

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