Charge Transfer Phenomena in Carbon Nanotube Heterodevices
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 23, 2000
- Accession Number
- ADP013127
Entities
People
- A. A. Odintsov
Organizations
- Delft University of Technology