Current Rectification by As-Grown Chemical Vapor Deposited Single-Walled Carbon Nanotubes

Abstract

Observation of diode-like current (I) - voltage (V) characteristics of switches fabricated from chemical vapor deposited (CVD) as-grown single-walled carbon nanotube (SWNT) bundles are presented. Atomic force microscopic analysis of the device structure and surface topology of SWNT suggest the observed rectification of current to possibly result from (a) cross-tube junctions, (b) a mixture of metallic and semiconducting tubes in the SWNT bundles, and/or (c) chirality change along a single tube. The exact mechanism underlying the observed rectification could not be established. The diode-like behavior of SWNT devices discovered in this research opens up new applications of SWNTs as nanoscale AC-DC converter.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2008
Accession Number
ADA495586

Entities

People

  • Govind Mallick
  • Mark H Griep
  • Pulickel Ajayan
  • Samuel Hirsch
  • Sangeeta Sahoo
  • Sarah Lastella
  • Shashi P. Karna

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Carbon Nanotubes
  • Diodes
  • Electron Microscopes
  • Engineering
  • Fullerenes
  • High Resolution
  • Materials
  • Materials Science
  • Mechanical Engineering
  • Microscopy
  • Military Research
  • Nanomaterials
  • Nanotechnology
  • P-N Junctions
  • Power Converters
  • Scanning Electron Microscopes
  • Semiconductors

Readers

  • Electrical Engineering
  • Nanoscale Plasmonic Nanotechnology
  • Solar Photovoltaics and Thermoelectric Devices.