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Licensed Unlicensed Requires Authentication Published by De Gruyter September 16, 2022

Thermoelectric Response Characteristics of Bi2Te3 Based Semiconductor Materials

  • Zhanxuan Wang , Xiulian Cheng , Kai Guo EMAIL logo , Enling Tang ORCID logo EMAIL logo , Lei Li , Hui Peng EMAIL logo , Yafei Han , Chuang Chen , Mengzhou Chang and Liping He

Abstract

In actual operation, the operating environment temperature of thermoelectric devices are constantly changing and rarely remain stable, and the electrical output characteristics of thermoelectric devices are largely determined by thermoelectric materials. In response to this question, the thermoelectric properties of thermoelectric materials (p and n type Bi 2 Te 3 ) are measured under different temperature difference environments. The Seebeck coefficient, resistivity, and thermal conductivity of the specimens at T = 300 600 K were measured by CTA-4 and CLA1000 (laser flash method), respectively; the thermal and electrical output responses of the thermoelectric materials under different temperature difference conditions were collected in real time by using a self-built thermoelectric performance test platform, thermal/electrical test system with infrared thermal imager, and voltage acquisition system, respectively. The experimental results show that when the temperature difference between the two ends of the specimen increases uniformly, the electrical output signal amplitude also increases uniformly; when the temperature difference is stable, the two ends of the specimen also produce a stable electrical output signal. After stabilization, the electrical output signal amplitude also decreases uniformly when the temperature decreases at a uniform rate. In the temperature range of 298 573 K, the larger the temperature difference between the two ends of the specimen was, the larger the amplitude of the electrical output signal was after stabilization; and vice versa. The greater the loading rate of the thermal load was, the greater the rate of increase of the electrical output signal amplitude at both ends of the specimen was, and the steady-state equilibrium time required was less.

Award Identifier / Grant number: 11472178

Award Identifier / Grant number: 2020001

Award Identifier / Grant number: SYLUGFTD202106

Award Identifier / Grant number: SYLUTD 202001

Funding statement: The authors would like to acknowledge the National Natural Science Foundation of China (11472178), Open Foundation of Hypervelocity Impact Research Center of CARDC (Grant No. 2020001), the cultivation and construction plan of National Defense Science and Technology Innovation team of Shenyang Ligong University (No. SYLUGFTD202106), and the scientific research and innovation team construction plan of Shenyang Ligong University (No. SYLUTD 202001) for the provision of fund for conducting experiments.

  1. Availability of data and material: The data that supports the findings of this study are available from the corresponding author upon request.

  2. Conflict of interest: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Received: 2022-07-18
Accepted: 2022-08-08
Published Online: 2022-09-16
Published in Print: 2022-10-31

© 2022 Walter de Gruyter GmbH, Berlin/Boston

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