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Thermoelectric Properties of BiTe
Faisal Fikri Oktaviantoni a, Kunchit Singsoog b, Melania Suweni Muntini a and Tosawat Seetawan b,c*

a Instrumentation and Electronic Laboratory, Department of Physics, Institut Teknologi Sepuluh Nopember, Arief Rachman Hakim Rd, Surabaya, 60111 East Java Indonesia
b Thermoelectric Research Laboratory, Center of Excellence on Alternative Energy, Reseach and Development Institution, Sakon Nakhon Rajabhat University, 680 Nittayo Rd, Mueang District, Sakon Nakhon 47000, Thailand
c Program of Physics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, 680 Nittayo Rd, Mueang District, Sakon Nakhon 47000, Thailand


Abstract

Research on crystal structures and thermoelectric properties has been carried out using BiTe material. The sintering method used is hot press. Hotpress pressure comes from the bottom up. Temperature variations used in hotpress are 400, 450 and 500°C. Analysis of crystal structure used XRD. Based on the XRD results, the result is that the crystal structure of BiTe bulk is hexagonal. Thermoelectric properties measurements used ZEM-3. The sample is measured in a temperature range of 50-200°C. Based on the measurements, the sample with hot press 500°C has the highest Seeback coefficient and power factor values which are -71 uV/K and 3.6 x 10-4 W/mK^2, respectively. The sample has the best performance at room temperature and has decreased performance with increasing temperature. While the best electrical resistivity value is owned by the sample with hot press 450°C with a value of 1.28 mΩ cm at room temperature. Overall, the higher the temperature used when sintering, the better the performance produced. Thus, the BiTe material can be considered as a thermoelectric material.

Keywords: Harvesting Energy, Thermoelectric technology, Bismuth Telluride

Topic: Energy and environment materials

Link: https://ifory.id/abstract/QWPc6vLAjGCY

Conference: The 4th International Conference on Applied Physics and Materials Application (ICAPMA 2019)

Plain Format | Corresponding Author (Tosawat Seetawan)

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