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Issue 2, 2012
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Probing the chemical and electronic properties of the core–shell architecture of transition metal trisulfide nanoribbons

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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 TaS3. The shell is chemically heterogeneous, containing elemental sulfur and a with a notable (S2)2 deficiency over the crystalline TaS3 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.

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

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Submitted
17 Oct 2011
Accepted
13 Nov 2011
First published
06 Dec 2011

Nanoscale, 2012,4, 607-612
Article type
Paper

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

M. O. King, M. Popland, S. J. Denholme, D. H. Gregory, D. A. MacLaren and M. Kadodwala, Nanoscale, 2012, 4, 607
DOI: 10.1039/C1NR11522G

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