Theoretical and experimental studies of Schottky diodes that use aligned arrays of single-walled carbon nanotubes

Xinning Ho, Lina Ye, Slava V. Rotkin, Xu Xie, Frank Du, Simon Dunham, Jana Zaumseil, John A. Rogers

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

We present theoretical and experimental studies of Schottky diodes that use aligned arrays of single-walled carbon nanotubes. A simple physical model, taking into account the basic physics of current rectification, can adequately describe the single-tube and array devices. We show that for as-grown array diodes, the rectification ratio, defined by the maximum-to-minimum-current-ratio, is low due to the presence of metallic-single-walled nanotube (SWNT) shunts. These tubes can be eliminated in a single voltage sweep resulting in a high rectification array device. Further analysis also shows that the channel resistance, and not the intrinsic nanotube diode properties, limits the rectification in devices with channel length up to 10 μm.

Original languageEnglish (US)
Pages (from-to)444-451
Number of pages8
JournalNano Research
Volume3
Issue number6
DOIs
StatePublished - Jun 2010

Keywords

  • Aligned arrays
  • Schottky diodes
  • Single-walled carbon nanotubes

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

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