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Thermoelectric energy-conversion characteristics of n-type Bi-2(Te,Se)(3) nanocomposites processed with carbon nanotube dispersion
- Authors
- Park, Dong-Hyun; Kim, Min-Young; Oh, Tae-Sung
- Issue Date
- Jul-2011
- Publisher
- ELSEVIER
- Keywords
- Thermoelectrics; Nanocomposites; Figure of merit; Carbon nanotube
- Citation
- CURRENT APPLIED PHYSICS, v.11, no.4, pp.S41 - S45
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 11
- Number
- 4
- Start Page
- S41
- End Page
- S45
- ISSN
- 1567-1739
- Abstract
- In this study, n-type Bi-2(Te0.9Se0.1)3 nanocomposites were processed by hot-pressing with dispersion of multiwalled carbon nanotubes (MWCNTs) up to 0.15 vol%. With 0.01 and 0.015 vol% MWCNT dispersion, it was possible to decrease the thermal conductivity of the Bi-2(Te0.9Se0.1)(3) nanocomposite without deteriorating the electrical resistivity. A maximum dimensionless figure-of-merit of 0.98 at 150 degrees C was obtained for the nanocomposite with 0.015 vol% MWCNT dispersion, as compared to 0.88 of the hot-pressed specimen without MWCNT dispersion. (C) 2011 Elsevier B.V. All rights reserved.
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