PbBi/sub 2/Te/sub 4/ and PbBi/sub 4/Te/sub 7/, thermoelectric materials in the system of Pb-Bi-Te

Author

Oosawa, Y. ; Tateno, Y. ; Mukaida, M. ; Tsunoda, T. ; Imai, Y. ; Isoda, Y. ; Nishida, I.A.

Author_Institution

Nat. Inst. of Mater. & Chem. Res., Ibaraki, Japan

fYear

1999

fDate

Aug. 29 1999-Sept. 2 1999

Firstpage

550

Lastpage

553

Abstract

In order to develop new high performance thermoelectric refrigeration materials, attempt of synthesizing new ternary compounds in M-Bi-Te (M=Zn, Cd, Hg, Ga, In, Ti, V, Nb, Ta, Fe, Ni) systems and evaluation of thermoelectric properties of PbBi/sub 2/Te/sub 4/ and PbBi/sub 4/Te/sub 7/ have been carried out. At first, synthesis of new ternary compounds in the M-Bi-Te systems has been attempted. However, no new ternary chalcogenide has been synthesized in these systems in our synthesis conditions. Secondly, the Pb-Bi-Te system has been investigated and the preparation conditions of PbBi/sub 2/Te/sub 4/ and PbBi/sub 4/Te/sub 7/ have been established. Pellets of these compounds have been prepared and the Seebeck coefficient, the electric conductivity, and the thermal conductivity have been measured, and the figure of merit has been calculated.

Keywords

Seebeck effect; bismuth compounds; electrical conductivity; lead compounds; ternary semiconductors; thermal conductivity; thermoelectric conversion; PbBi/sub 2/Te/sub 4/; PbBi/sub 4/Te/sub 7/; Seebeck coefficient; electric conductivity; figure of merit; high performance thermoelectric refrigeration materials; ternary chalcogenide; thermal conductivity; Bismuth; Conducting materials; Inorganic materials; Mercury (metals); Niobium; Refrigeration; Tellurium; Thermal conductivity; Thermoelectricity; Zinc;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 1999. Eighteenth International Conference on

Conference_Location

Baltimore, MD, USA

ISSN

1094-2734

Print_ISBN

0-7803-5451-6

Type

conf

DOI

10.1109/ICT.1999.843449

Filename

843449