Accession Number:

ADP013127

Title:

Charge Transfer Phenomena in Carbon Nanotube Heterodevices

Descriptive Note:

Conference proceedings

Corporate Author:

DELFT UNIV OF TECHNOLOGY (NETHERLANDS)

Personal Author(s):

Report Date:

2000-06-23

Pagination or Media Count:

5.0

Abstract:

We describe the transfer of electric charge in junctions between a metal and carbon nanotube as well as between metallic and semiconducting carbon nanotubes. The long range Coulomb interaction drastically modifies the charge transfer phenomena in one-dimensional nanotube systems compared to conventional semiconductor heterostructures. Being brought into a contact with a metal. conducting nanotube accumulates electric charge whose density decays slowly with the distance from the junction. The length of the Schottky barrier in nanotube heterojunctions varies from the distances of the order of the nanotube radius nanometers to the distances of the order of the nanotube length microns depending on a doping strength. The Schottky barrier height shows pronounced asymmetry under the forward and reverse bias. This results in rectifying behavior of heterojunctions. in agreement with recent experimental observations by Z. Yan et al. and M. Fuhrer et al.

Subject Categories:

  • Solid State Physics
  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE