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Abstract
A novel method for thermoelectric materials fabrication using a reduction of oxide precursors in hydrogen was reported. On the example of Bi-Sb, Bi-Sb-Te and Te-Ag-Ge-Sb compounds it was shown that this simple and easy method is suitable for fabrication of two-, three- and even multicomponent thermoelectric materials. It allows controlling a composition, microstructure and even type a of electrical charge carriers. As a result of reduction of oxide precursors a layered structure with an average thickness of layers equal tens of nanometers was formed. At the near-room temperature the best material with a figure of merit (ZT) close to 0.4 was Bi0.8Sb1.2Te3Ox reduced at 340 °C for 10 hours. At 350 °C a value of ZT=0.8 was reached by the (GeTe)0.85(AgSbTe2)0.15 (TAGS85) sample reduced twice at 400 °C for 10h.
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
MATERIALS RESEARCH BULLETIN
no. 76,
pages 195 - 204,
ISSN: 0025-5408 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Bochentyn B., Karczewski J., Miruszewski T., Kusz B.: Novel method for metal-oxide glass composite fabrication for use in thermoelectric devices// MATERIALS RESEARCH BULLETIN. -Vol. 76, (2016), s.195-204
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.materresbull.2015.12.018
- Verified by:
- Gdańsk University of Technology
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