Comprehensive spectroscopic characterization of high purity metallicity-sorted single-walled carbon nanotubes

Author(s)

Marianna V. Kharlamova, Christian Kramberger, Markus Sauer, Kazuhiro Yanagi, Thomas Pichler

Abstract

We have performed a thorough characterization of 1.4 nm-diameter

single-walled carbon nanotubes (SWCNTs) separated according to their

metallicity by optical absorption (OAS), X-ray photoelectron (XPS),

ultraviolet photoelectron (UPS), and multifrequency Raman spectroscopy.

The OAS, XPS, and UPS data prove a high purity (99%)

of SWCNTs. The C 1s core level XPS spectra of the separated nanotubes

show different spectral widths, asymmetry, and peak positions. The UPS

spectra of the samples demonstrate clearly defined van Hove

singularities. Significant differences are observed in the Raman

spectra of the separated nanotubes. Our findings suggest that for

further advances in SWCNT metallicity sorting, Raman spectroscopy has

to be applied to assess purity levels beyond the detection limits of

OAS, XPS, and UPS.

Organisation(s)

Electronic Properties of Materials

External organisation(s)

Tokyo Metropolitan University

Journal

Physica Status Solidi. B: Basic Research

Volume

252

Pages

2512–2518

No. of pages

ISSN

0370-1972

DOI

https://doi.org/10.1002/pssb.201552251

Publication date

11-2015

Peer reviewed

Yes

Austrian Fields of Science 2012

205017 Materials engineering

Keywords

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

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