Thermoelectric properties of the 0.05 wt.% SbI3-doped n-type Bi-2(Te0.95Se0.05)(3) alloy fabricated by the hot pressing method
- Authors
- Lee, SK; Oh, TS; Hyun, DB; Hwang, CW
- Issue Date
- Feb-2000
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- bismuth telluride; thermoelectric properties; Peltier cooling; figure-of-merit; hot pressing
- Citation
- METALS AND MATERIALS INTERNATIONAL, v.6, no.1, pp.67 - 71
- Journal Title
- METALS AND MATERIALS INTERNATIONAL
- Volume
- 6
- Number
- 1
- Start Page
- 67
- End Page
- 71
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/27395
- DOI
- 10.1007/BF03026347
- ISSN
- 1598-9623
- Abstract
- Thermoelectric properties of the 0.05 wt.% SbI3-doped n-type Bi-2(Te0.95Se0.05)(3) alloy fabricated by hot pressing at temperatures ranging from 350 degrees C to 550 degrees C, were characterized. The electron concentration of the alloy decreased as the hot pressing temperature increased due to the annealing-out of the excess Te vacancies. When hot pressed at 350 degrees C, a figure-of-merit of 0.75x10(-3)/K was obtained due to the low Seebeck coefficient of -145 mu V/K and relatively high electrical resistivity of 2.05 m Ohm-cm. Upon increasing the hot pressing temperature, however, the figure-of-merit was improved mainly due to the increase of the Seebeck coefficient. A maximum figure-of-merit of 2.1x10(-3)/K was obtained by hot pressing at 550 degrees C.
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Collections - College of Engineering > Materials Science and Engineering Major > 1. Journal Articles
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