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 3. The shell is chemically heterogeneous, containing elemental sulfur and a with a notable (S 2) 2- deficiency over the crystalline TaS 3 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.
Original language | English |
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Pages (from-to) | 607-612 |
Number of pages | 6 |
Journal | Nanoscale |
Volume | 4 |
Issue number | 2 |
DOIs | |
Publication status | Published - Jan 21 2012 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)