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Electronic structure control of sub-nanometer 1D SnTe via nanostructuring within single-walled carbon nanotubes
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Vasylenko, Andrij, Marks, Samuel R., Wynn, Jamie M., Medeiros, Paulo V. C., Ramasse, Quentin M., Morris, Andrew J., Sloan, Jeremy and Quigley, David (2018) Electronic structure control of sub-nanometer 1D SnTe via nanostructuring within single-walled carbon nanotubes. ACS Nano, 12 (6). pp. 6023-6031. doi:10.1021/acsnano.8b02261 ISSN 1936-0851.
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Official URL: http://dx.doi.org/10.1021/acsnano.8b02261
Abstract
Nanostructuring, e.g., reduction of dimensionality in materials, offers a viable route toward regulation of materials electronic and hence functional properties. Here, we present the extreme case of nanostructuring, exploiting the capillarity of single-walled carbon nanotubes (SWCNTs) for the synthesis of the smallest possible SnTe nanowires with cross sections as thin as a single atom column. We demonstrate that by choosing the appropriate diameter of a template SWCNT, we can manipulate the structure of the quasi-one-dimensional (1D) SnTe to design electronic behavior. From first principles, we predict the structural re-formations that SnTe undergoes in varying encapsulations and confront the prediction with TEM imagery. To further illustrate the control of physical properties by nanostructuring, we study the evolution of transport properties in a homologous series of models of synthesized and isolated SnTe nanowires varying only in morphology and atomic layer thickness. This extreme scaling is predicted to significantly enhance thermoelectric performance of SnTe, offering a prospect for further experimental studies and future applications.
Item Type: | Journal Article | |||||||||||||||
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Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Nanowires, Carbon nanotubes, Thermoelectric materials | |||||||||||||||
Journal or Publication Title: | ACS Nano | |||||||||||||||
Publisher: | American Chemical Society | |||||||||||||||
ISSN: | 1936-0851 | |||||||||||||||
Official Date: | 26 June 2018 | |||||||||||||||
Dates: |
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Volume: | 12 | |||||||||||||||
Number: | 6 | |||||||||||||||
Page Range: | pp. 6023-6031 | |||||||||||||||
DOI: | 10.1021/acsnano.8b02261 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
Date of first compliant deposit: | 31 January 2019 | |||||||||||||||
Date of first compliant Open Access: | 1 February 2019 | |||||||||||||||
RIOXX Funder/Project Grant: |
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