An X-ray absorption approach to mixed and metallicity-sorted single-walled carbon nanotubes

Autor(en)

Paola Ayala, Hidetsugu Shiozawa, Katrien De Blauwe, Yasumitsu Miyata, Rolf Follath, Hiromichi Kataura, Thomas Pichler

Abstrakt

Carbon based structures have been widely studied by X-ray absorption (XAS), also called NEXAFS, which is a very useful bulk probing method that allows examining the unoccupied density of states (DOS) and the site selective bonding environment. Two very well known spectral features in the XAS core level spectrum are the sigma* and pi* bands, and both have been analyzed in several studies for graphitic-like systems. However, among all the carbon materials, the unique one-dimensional electronic properties attributed to single-walled carbon nanotubes (SWCNTs) exhibit features that reveal clearly their electronic structure in the core level XAS spectrum. In this article, we outline the C1s response in XAS, which is related to the DOS of the conduction band in SWCNTs and its fine structure, revealed by experiments performed on metallicity-sorted SWCNT material. The progress in the identification of changes in the site selective conduction band electronic structure with XAS is discussed in detail.

Organisation(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

University of Surrey, Nagoya University, Helmholtz-Zentrum Berlin für Materialien und Energie, National Institute of Advanced Industrial Science and Technology (AIST)

Journal

Journal of Materials Science

Band

45

Seiten

5318-5322

Anzahl der Seiten

5

ISSN

0022-2461

DOI

https://doi.org/10.1007/s10853-010-4577-2

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0ca2d58c-9069-4fd7-9d05-121f87f880c0