Thermoelectric Properties of Bi2 –xLuxTe2.7Se0.3 Solid Solutions


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Аннотация

The thermoelectric properties of compounds based on Bi2 –xLuxTe2.7Se0.3 solid solutions with x = 0, 0.05, 0.1, and 0.2 are studied. The samples for investigations are prepared by chemical-solution deposition (to synthesize the initial powders) and spark plasma sintering (to obtain bulk samples). The patterns of changes in the electrical resistivity, Seebeck coefficient, and total thermal conductivity of the samples are determined as a function of the lutetium content. It is established that the optimal combination of these thermoelectric characteristics is attained for the composition with x = 0.05, which demonstrates the highest thermoelectric figure of merit (ZT ≈ 0.9 in the temperature range of 400–480 K) among all the studied compositions.

Авторлар туралы

A. Vasil’ev

Belgorod National Research University

Хат алмасуға жауапты Автор.
Email: 748070@bsu.edu.ru
Ресей, Belgorod, 308015

M. Yapryntsev

Belgorod National Research University

Email: 748070@bsu.edu.ru
Ресей, Belgorod, 308015

O. Ivanov

Belgorod National Research University; Belgorod State Technological University named after V.G. Shukhov

Email: 748070@bsu.edu.ru
Ресей, Belgorod, 308015; Belgorod, 308012

M. Zhezhu

Belgorod National Research University

Email: 748070@bsu.edu.ru
Ресей, Belgorod, 308015

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