High density p-type Bi0.5Sb1.5Te3 nanowires by electrochemical templating through ion-track lithography
Li, Xiaohong, Koukharenko, Elena, Nandhakumar, Iris S., Tudor, John, Beeby, Steve P. and White, Neil M. (2009) High density p-type Bi0.5Sb1.5Te3 nanowires by electrochemical templating through ion-track lithography. Physical Chemistry Chemical Physics, 11, (18), 3584-3590. (doi:10.1039/B818040G).
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Description/Abstract
High density p-type Bi0.5Sb1.5Te3 nanowire arrays are produced by a combination of electrodeposition and ion-track lithography technology. Initially, the electrodeposition of p-type Bi0.5Sb1.5Te3 films is investigated to find out the optimal conditions for the deposition of nanowires. Polyimide-based Kapton foils are chosen as a polymer for ion track irradiation and nanotemplating Bi0.5Sb1.5Te3 nanowires. The obtained nanowires have average diameters of 80 nm and lengths of 20 μm, which are equivalent to the pore size and thickness of Kapton foils. The nanowires exhibit a preferential orientation along the {110} plane with a composition of 11.26 at.% Bi, 26.23 at.% Sb, and 62.51 at.% Te. Temperature dependence studies of the electrical resistance show the semiconducting nature of the nanowires with a negative temperature coefficient of resistance and band gap energy of 0.089 ± 0.006 eV
| Item Type: | Article |
|---|---|
| ISSNs: | 1463-9076 (print) 1463-9084 (electronic) |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 172219 |
| Date Deposited: | 25 Jan 2011 14:41 |
| Last Modified: | 01 Jun 2011 05:39 |
| Contributors: | Li, Xiaohong (Author) Koukharenko, Elena (Author) Nandhakumar, Iris S. (Author) Tudor, John (Author) Beeby, Steve P. (Author) White, Neil M. (Author) |
| Date: | 2009 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/172219 |
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