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), p. 607. (doi:10.1039/C1NR11522G)

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), p. 607. (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
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacLaren, Dr Donald
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 Physics and Astronomy
Journal Name:Nanoscale
ISSN:2040-3364
ISSN (Online):2040-3372
Published Online:06 December 2011

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
530721Integrating advanced nanomaterials into transformative technologiesDonald MacLarenEngineering & Physical Sciences Research Council (EPSRC)EP/I00419X/1Physics and Astronomy