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Substitutionally-Functionalized vs Metallicity-Selected Single-Walled Carbon Nanotubes: A High Energy Spectroscopy Viewpoint

Published online by Cambridge University Press:  31 January 2011

Paola Ayala
Affiliation:
Christian Kramberger
Affiliation:
[email protected], Universität Wien, Vienna, Austria
Yasumitsu Miyata
Affiliation:
[email protected], University of Nagoya, Nagoya, Japan
Katrien De Blauwe
Affiliation:
[email protected], Universität Wien, Vienna, Austria
Hidetsugu Shiozawa
Affiliation:
[email protected], University of Surrey, Advanced Technology Institute, Guildford, United States
Rolf Follath
Affiliation:
[email protected], BESSY II, Berlin, Germany
Hiromichi Kataura
Affiliation:
[email protected], AIST, Tsukuba, Japan
Thomas Pichler
Affiliation:
[email protected], Universität Wien, Vienna, Austria
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Abstract

The unique one-dimensional electronic and optical properties attributed to single-walled carbon nanotubes (SWCNTs) are mainly related to the peculiar local arrangement of sp2 hybridised carbon atoms. This structural configuration gives raise to interesting features, which can be identified with various spectroscopic techniques. In the case of SWCNTs, high energy spectroscopy methods represent effective key tools to analyse the modifications of the underlying basic correlation effects in the bonding environment, the charge transfer between functionalized nanotubes, and on-wall doping. More specifically, in this article we review the shape of the C1s photoemission (PES) response related to the density of states (DOS) of the valence band (VB) in SWCNTs and its changes upon on-wall functionalization and metallicity-sorting. In the last, the progress in the identification of changes in the site selective valence-band electronic structure is clarified in detail.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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