Influence of ionizing irradiation on the properties of thermoelectric coolers

K. A. Askerov

doi:10.1117/12.350909

10 June 1999 Influence of ionizing irradiation on the properties of thermoelectric coolers

K. A. Askerov

Proceedings Volume 3819, International Conference on Photoelectronics and Night Vision Devices; (1999) https://doi.org/10.1117/12.350909
Event: International Conference on Photoelectronics and Night Vision Devices, 1998, Moscow, Russian Federation

Abstract

Influence of ionizing irradiation of different kinds on the thermoelectrical parameters of the thermoelements on the base of Bi₂Te₃-Bi₂Se₃ and Bi₂Te₃- Sb₂Te₃ systems solid solutions have been investigated. To ascertain the mechanism of the action of irradiation on thermoelectrical parameters of TEC, previously the influence of this irradiation on the properties of crystals also was studied. The samples investigated were obtained by the oriented crystallization method--Bridgman technique and subjected to action of gamma- irradiation in the range of fluences 10⁶ - 10⁸ R, electron irradiance of 25 MeV energy in fluence range 10¹³ - 10¹⁴ cm^-2 and pulse gamma-neutron irradiation in fluence range 10¹³ - 10¹⁴ cm^-2. It is shown that irradiation by gamma-neutrons up to fluences 10¹⁴ cm^-2 leads to increasing of (Delta) T_max of TEM, as well as efficiency of n- and p- branches of thermoelements. This fact permits to suppose, that such a variations of (Delta) T_max are due both to decreasing of resistance of transitional contacts and increasing of thermoelectric figure of merit of the thermoelectric material itself. Thus results obtained are indicated that variations of (Delta) T_max for TEM under irradiation are due both to variations of thermoelement branches parameters and the resistance of transitional contacts.

Citation Download Citation

K. A. Askerov "Influence of ionizing irradiation on the properties of thermoelectric coolers", Proc. SPIE 3819, International Conference on Photoelectronics and Night Vision Devices, (10 June 1999); https://doi.org/10.1117/12.350909

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