Diameter dependent Raman scattering of WS2 nanotubes
Diameter dependent Raman scattering of WS2 nanotubes
Krause, M.; Virsek, M.; Remskar, M.; Kolitsch, A.; Möller, W.
Abstract
The effect of the tube diameter and of the surface layer on the Raman spectra of WS2 nanotubes is investigated. With decreasing diameter, a disorder-induced line in the A1g mode range, the D-A1g line, is selectively enhanced. This enhancement is attributed to an increasing structural disorder in smaller nanotubes. On the other hand, no significant effect on the D-A1g / A1g intensity ratio is observed for a Raman scan perpendicular to a 290 nm diameter tube. Therefore the enhancement of the disorder induced line is an intrinsic property of WS2 nanostructures and not a surface layer effect.
Keywords: Inorganic Nanotubes; Layered Compounds; Raman spectroscopy
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Physica Status Solidi (B) 246(2009), 2786-2789
DOI: 10.1002/pssb.200982275
Cited 18 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-12929