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Combined STM/STS, TEM/EELS investigation of CN x ‐SWNTs
Author(s) -
Lin H.,
Lagoute J.,
Chacon C.,
Arenal R.,
Stéphan O.,
Repain V.,
Girard Y.,
Enouz S.,
Bresson L.,
Rousset S.,
Loiseau A.
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200879634
Subject(s) - carbon nanotube , nitrogen , materials science , nanotechnology , characterization (materials science) , analytical chemistry (journal) , chemical engineering , chemistry , organic chemistry , engineering
Nitrogen doped single‐walled carbon nanotubes (CN x ‐SWNTs) were successfully synthesized by vaporizing a C:Ni/Y target by a CO 2 continuous laser under a nitrogen atmosphere. The as‐grown nanotubes were investigated by combining TEM/EELS and STM/STS techniques. According to TEM observations, the tubes are mostly single‐walled and few defects are found. Local chemical characterization was performed by EELS analysis, which proves the presence of nitrogen in both individual tubes and SWNTs bundles and indicates a nitrogen concentration around 1 at.%. STM observations of CN x ‐SWNTs have been then undertaken and atomic resolution images were obtained. First STM analyses of these nanotubes show some defects which have never been observed in pure carbon nanotubes before. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)