Identification of Electron Donor States in N-Doped Carbon Nanotubes

Nitrogen-doped carbon nanotubes have been synthesized using pyrolysis and characterized by scanning tunneling spectroscopy and transmission electron microscopy. The doped nanotubes are all metallic and exhibit strong electron donor states near the Fermi level. Using tight-binding and ab initio calcu...

Full description

Saved in:
Bibliographic Details
Published inNano letters Vol. 1; no. 9; pp. 457 - 460
Main Authors Czerw, R, Terrones, M, Charlier, J.-C, Blase, X, Foley, B, Kamalakaran, R, Grobert, N, Terrones, H, Tekleab, D, Ajayan, P. M, Blau, W, Rühle, M, Carroll, D. L
Format Journal Article
LanguageEnglish
Published American Chemical Society 01.09.2001
Online AccessGet full text

Cover

More Information
Summary:Nitrogen-doped carbon nanotubes have been synthesized using pyrolysis and characterized by scanning tunneling spectroscopy and transmission electron microscopy. The doped nanotubes are all metallic and exhibit strong electron donor states near the Fermi level. Using tight-binding and ab initio calculations, we observe that pyridine-like N structures are responsible for the metallic behavior and the prominent features near the Fermi level. These electron rich structures are the first example of n-type nanotubes, which could pave the way to real molecular heterojunction devices.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl015549q