T-shaped Bi2Te3-Te heteronanojunctions: Epitaxial growth, structural modeling, and thermoelectric properties
Article
Article Title | T-shaped Bi2Te3-Te heteronanojunctions: Epitaxial growth, structural modeling, and thermoelectric properties |
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ERA Journal ID | 35015 |
Article Category | Article |
Authors | Cheng, Lina (Author), Chen, Zhi-Gang (Author), Yang, Lei (Author), Han, Guang (Author), Xu, Hong-Yi (Author), Snyder, G. Jeffrey (Author), Lu, Gao-Qing (Max) (Author) and Zou, Jin (Author) |
Journal Title | The Journal of Physical Chemistry C: Energy, Materials, and Catalysis |
The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter | |
Journal Citation | 117 (24), pp. 12458-12464 |
Number of Pages | 7 |
Year | 2013 |
Publisher | American Chemical Society |
Place of Publication | United States |
ISSN | 1932-7447 |
1932-7455 | |
1932-7455 | |
Digital Object Identifier (DOI) | https://doi.org/10.1021/jp4041666 |
Web Address (URL) | http://pubs.acs.org/doi/pdf/10.1021/jp4041666 |
Abstract | Novel T-shaped Bi2Te3-Te heteronanojunctions composed of a rhombohedral structured Bi2Te3 nanoplate and a trigonal structured Te nanorod were fabricated by a simple and facile solvothermal method. A unique crystallographic relationship of [21̄1̄0]Bi2Te3/[21̄1̄0]Te and [0001]Bi2Te3//[0001]Te has been observed for this epitaxial growth. Such epitaxial nature between Bi2Te 3 nanoplates and Te nanorods is caused by their negligible lattice mismatches in the corresponding atomic planes. The interfaces between Bi 2Te3 nanoplates and Te nanorods lead to a low thermal conductivity in these heteronanojunctions, so that a promising figure of merit (ZT) value is obtained (0.73 ± 0.04 at 320 K). This study provides a new method and opportunity to engineer heteronanojunctions for high-efficiency thermoelectric devices for power generation. |
Keywords | figure of merits; heteronanojunctions; high-efficiency; low thermal conductivity; solvothermal method; structural modeling; thermoelectric devices; thermoelectric properties; structural design; nanotechnology; coatings and finishes; solid state physics; |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
California Institute of Technology (Caltech), United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4179/t-shaped-bi2te3-te-heteronanojunctions-epitaxial-growth-structural-modeling-and-thermoelectric-properties
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