Adaptability of AgSbTe2 to FGM

S. Yoneda, E. Ohta, Y. Shinohara, T. Kimura, I. A. Nishida, H. T. Kaibe

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

Thermoelectric properties of the unidirectionally grown p-type AgSbTe2 and Ag0.208Sb0.275Te0.517 boules have been evaluated to investigate adaptability of these materials system to functionally graded thermoelectric materials(FGMs). The AgSbTe2 boule contained even more Ag2Te precipitates than the Ag0.208Sb0.275Te0.517. Thermoelectric properties for these boules showed the different temperature dependence, which were strongly affected by the transformation at 418 K and also 633 K. The Ag2Te boule grown under similar condition as AgSbTe2 and Ag0.208Sb0.275Te0.517 is an n-type conductor. Thermoelectricmotive force E0 of the p-type AgSbTe2 boule is decreased by n-type Ag2Te precipitates. Pmax of Ag0.208Sb0.275Te0.517 boule were four times as large as that of AgSbTe2 at temperature difference ΔT=350 K, and also equaled that of the segmented Pb1-xSnxTe compound newly developed. High temperature phase of AgSbTe2 above 633 K revealed its high potential of power generation. It is concluded that there is possibility of developing more superior thermoelectric materials by controlling structure and composition.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publ
Pages731-735
Number of pages5
Volume308-311
Publication statusPublished - 1999
EventProceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 - Dresden, Ger
Duration: 1998 Oct 261998 Oct 29

Other

OtherProceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98
CityDresden, Ger
Period98/10/2698/10/29

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Precipitates
Temperature
Power generation
Chemical analysis

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Yoneda, S., Ohta, E., Shinohara, Y., Kimura, T., Nishida, I. A., & Kaibe, H. T. (1999). Adaptability of AgSbTe2 to FGM. In Materials Science Forum (Vol. 308-311, pp. 731-735). Trans Tech Publ.

Adaptability of AgSbTe2 to FGM. / Yoneda, S.; Ohta, E.; Shinohara, Y.; Kimura, T.; Nishida, I. A.; Kaibe, H. T.

Materials Science Forum. Vol. 308-311 Trans Tech Publ, 1999. p. 731-735.

Research output: Chapter in Book/Report/Conference proceedingChapter

Yoneda, S, Ohta, E, Shinohara, Y, Kimura, T, Nishida, IA & Kaibe, HT 1999, Adaptability of AgSbTe2 to FGM. in Materials Science Forum. vol. 308-311, Trans Tech Publ, pp. 731-735, Proceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98, Dresden, Ger, 98/10/26.
Yoneda S, Ohta E, Shinohara Y, Kimura T, Nishida IA, Kaibe HT. Adaptability of AgSbTe2 to FGM. In Materials Science Forum. Vol. 308-311. Trans Tech Publ. 1999. p. 731-735
Yoneda, S. ; Ohta, E. ; Shinohara, Y. ; Kimura, T. ; Nishida, I. A. ; Kaibe, H. T. / Adaptability of AgSbTe2 to FGM. Materials Science Forum. Vol. 308-311 Trans Tech Publ, 1999. pp. 731-735
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