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Proceedings Paper

Thermoelectric efficiency of the extruded samples of Bi0.5Sb1.5Te3 and Bi2Te2.7Se0.3 solid solutions with different grain size
Author(s): E. G. Djafarov; T. D. Aliyeva; D. Sh. Abdinov
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Paper Abstract

The effect of grain size of a starting powder and heat treatment on thermoelectric efficiency (Z) of extruded samples of Bi0.5Sb1.5Te3 and Bi2Te2.7Se0.3 solid solutions in temperature range from 77 up to 350 K. It is clarified, that in case of Bi0.5Sb1.5Te3 solid solution maximal Z is observed in samples with of grains 630 microns and passed heat treatment in vacuum at 690K within 5 hours. In a case of Bi2Te2.7Se0.3 solid solutions in samples with dimension of grains 630 microns, non-passed heat treatment. It is shown, that the obtained results are satisfactorily explained by effect of texture and structural imperfection son density and mobility of charge carriers, and also on the scattering mechanism of photons in extruded samples of the investigated solid solutions.

Paper Details

Date Published: 28 November 2000
PDF: 4 pages
Proc. SPIE 4340, 16th International Conference on Photoelectronics and Night Vision Devices, (28 November 2000); doi: 10.1117/12.407755
Show Author Affiliations
E. G. Djafarov, Institute of Photoelectronics (Azerbaijan)
T. D. Aliyeva, Institute of Photoelectronics (Azerbaijan)
D. Sh. Abdinov, Institute of Photoelectronics (Azerbaijan)


Published in SPIE Proceedings Vol. 4340:
16th International Conference on Photoelectronics and Night Vision Devices
Anatoly M. Filachev; Alexander I. Dirochka, Editor(s)

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