Journal article
Free-standing millimetre-long Bi2Te3 sub-micron belts catalyzed by TiO2 nanoparticles
- Abstract:
- Physical vapour deposition (PVD) is used to grow millimetre-long Bi2 Te3 sub-micron belts catalysed by TiO2 nanoparticles. The catalytic efficiency of TiO2 nanoparticles for the nanostructure growth is compared with the catalyst-free growth employing scanning electron microscopy. The catalyst-coated and catalyst-free substrates are arranged side-by-side, and overgrown at the same time, to assure identical growth conditions in the PVD furnace. It is found that the catalyst enhances the yield of the belts. Very long belts were achieved with a growth rate of 28 nm/min. A ∼1-mm-long belt with a rectangular cross-section was obtained after 8 h of growth. The thickness and width were determined by atomic force microscopy, and their ratio is ∼1:10. The chemical composition was determined to be stoichiometric Bi2Te3 using energy-dispersive X-ray spectroscopy. Temperature-dependent conductivity measurements show a characteristic increase of the conductivity at low temperatures. The room temperature conductivity of 0.20×1^5 S⋅m^−1 indicates an excellent sample quality.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.8MB, Terms of use)
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- Publisher copy:
- 10.1186/s11671-016-1510-x
Authors
+ Corpus Christi College (University of Oxford)
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- Funding agency for:
- Schoenherr, P
+ Engineering and Physical Sciences Research Council
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- Funding agency for:
- Schoenherr, P
- Publisher:
- SpringerOpen
- Journal:
- Nanoscale Research Letters More from this journal
- Volume:
- 11
- Article number:
- 308
- Publication date:
- 2016-06-24
- Acceptance date:
- 2016-05-27
- DOI:
- ISSN:
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1931-7573
- Keywords:
- Pubs id:
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pubs:625022
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uuid:54ec18be-857b-48df-ae4c-8bd2dd145e8d
- Local pid:
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pubs:625022
- Source identifiers:
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625022
- Deposit date:
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2016-06-01
Terms of use
- Copyright holder:
- Schönherr et al
- Copyright date:
- 2016
- Notes:
- © 2016 The Author(s). Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Licence:
- CC Attribution (CC BY)
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