Probing the chemical and electronic properties of the core–shell architecture of transition metal trisulfide nanoribbons

King, M.O., Popland, M., Denholme, S.J., Gregory, D.H. , MacLaren, D.A. and Kadodwala, M. (2012) Probing the chemical and electronic properties of the core–shell architecture of transition metal trisulfide nanoribbons. Nanoscale, 4(2), pp. 607-612. (doi: 10.1039/C1NR11522G)

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Publisher's URL: http://dx.doi.org/10.1039/C1NR11522G

Abstract

Ultraviolet and X-ray photoelectron spectroscopies are used to probe the chemical and electronic structure of an amorphous, 2–20 nm-thick shell that encases the crystalline core in core–shell nanoribbons of TaS<sub>3</sub>. The shell is chemically heterogeneous, containing elemental sulfur and a with a notable (S<sub>2</sub>)<sup>2−</sup> deficiency over the crystalline TaS<sub>3</sub> core. We find nanoribbon stability to be substrate-dependent; whilst the ribbons are stable on the native oxide of a silicon surface, mass transport of sulfur species between the amorphous shell and a gold substrate leads to a significant change in the electronic properties of the nanomaterials. Our observations may have general implications for the incorporation of nanostructured transition metal chalcogenides into electronic devices.

Item Type:Articles
Additional Information:Glasgow author M.O. King is a PhD student within the School of Chemistry.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kadodwala, Professor Malcolm and Denholme, Mr Saleem and King, Mr Martin and Gregory, Professor Duncan
Authors: King, M.O., Popland, M., Denholme, S.J., Gregory, D.H., MacLaren, D.A., and Kadodwala, M.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Nanoscale
ISSN:2040-3364
ISSN (Online):2040-3372
Published Online:06 December 2011

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