Abstract

The effect of pulsed photon treatment on the thermal conductivity and thermoelectric figure of merit of n-type Bi₂Te₃–Bi₂Se₃ solid solution has been studied. The samples have been obtained by powder metallurgy by synthesis and hot pressing in an argon atmosphere. It has been found that pulsed photon treatment of samples in an argon atmosphere leads to a decrease in the thermal conductivity of the sample. In this case, the electronic component of the thermal conductivity exhibits a decrease regardless of the treatment mode owing to a decrease in the electronic component of heat capacity, whereas the phonon component decreases only in the range of relatively high irradiation doses. An optimal mode of pulsed photon treatment has been determined, wherein the decrease in the thermal conductivity of the material occurs simultaneously with an increase in the power factor, while the thermoelectric figure of merit exhibits an almost 10% increase.

中文翻译：

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脉冲光子处理对基于Bi 2 Te 3 –Bi 2 Se 3的n型固溶体的电物理和热物理性质的影响II。导热系数和热电系数

摘要

脉冲光子处理对n型Bi ₂ Te ₃ -Bi ₂ Se ₃的导热系数和热电性能的影响已经研究了固溶体。样品通过粉末冶金法通过合成和在氩气氛中热压而获得。已经发现在氩气氛中对样品进行脉冲光子处理导致样品的热导率降低。在这种情况下，由于热容量的电子成分的减少，与处理方式无关，热导率的电子成分都降低，而声子成分仅在相对高的照射剂量范围内降低。已经确定了脉冲光子处理的最佳模式，其中材料导热系数的降低与功率因数的增加同时发生，而热电性能因数显示几乎提高了10％。