Enhanced thermoelectric power factor and low thermal conductivity in one-dimensional Te/Ag2Te composites
- Authors
- Park, Dabin; Ju, Hyun; Kim, Jooheon
- Issue Date
- 1-Oct-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Thermoelectric; Te nanorod; Ag2Te nanorod; 1D nanostructure
- Citation
- CERAMICS INTERNATIONAL, v.43, no.14, pp 11156 - 11162
- Pages
- 7
- Journal Title
- CERAMICS INTERNATIONAL
- Volume
- 43
- Number
- 14
- Start Page
- 11156
- End Page
- 11162
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/3796
- DOI
- 10.1016/j.ceramint.2017.05.163
- ISSN
- 0272-8842
1873-3956
- Abstract
- We reports the synthesis and characterization of Te/Ag2Te nanorod composites with various Ag2Te contents. The composite samples were prepared by mixing Te and Ag2Te nanorods synthesized by polyvinylpyrrolidone (PVP)-assisted solution-phase mixing. The thermoelectric properties of the prepared composites vary according to the Ag2Te content. Furthermore, the samples exhibit an enhancement in electrical conductivity and a reduction in the Seebeck coefficient with increasing Ag2Te content. The maximum power factor (350.71 mu V/K at room temperature) is observed for the sample containing 30% Ag2Te. The samples were assembled as 1D nanostructures, which led to a decrease in thermal conductivity owing to the strong phonon scattering effect. The maximum thermoelectric figure of merit (ZT) at room temperature, 0.34 was obtained for the sample with 30% Ag2Te content. This value is 480% larger than that obtained for the pristine Te nanorod samples.
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Collections - College of Engineering > School of Chemical Engineering and Material Science > 1. Journal Articles
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