ENHANCED THERMOELECTRIC PROPERTIES of n-Bi2Se3 AND p-Bi0.4Sb1.6Te3 SYNTHESIZED BY USING HOT-PRESS METHOD

Authors

  • Surasak Ruamruk Program of Physics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand
  • Bralee Chayasombat National Metal and Materials Technology Center (MTEC) Thailand Science Park, Pathumthani, 12120, Thailand
  • Wanatchaporn Namhongsa Thermoelectric Research Laboratory, Center of Excellence on Alternative Energy, Research and Development Institution, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand
  • Kunchit Singsoog Thermoelectric Research Laboratory, Center of Excellence on Alternative Energy, Research and Development Institution, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand
  • Panida Pilasuta Thermoelectric Research Laboratory, Center of Excellence on Alternative Energy, Research and Development Institution, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand
  • Athorn Vora-ud Thin Films Research Laboratory, Center of Excellence on Alternative Energy, Research and Development Institution, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand
  • Ronariddh Nakhowonge Program of Physics, Faculty of Science, Ubon Ratchathani Rajabhat University, 2 Ratchathani Road, Mueang District, Ubon Ratchathani,34000, Thailand
  • Tosawat Seetawan Program of Physics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, 680 Nittayo Road, Mueang District, Sakon Nakhon, 47000, Thailand

DOI:

https://doi.org/10.55766/sujst9078

Keywords:

Bi2Se3, Bi0.4Sb1.6Te3, HP method, TE properties, zT

Abstract

We present the thermoelectric characteristics of bulk samples of the n-type Bi2Se3 and p-type Bi0.4Sb1.6Te3 that were produced by the vacuum melt technique and then vacuum hot-pressed at 723 and 523 K, respectively. The samples were investigated for their crystalline structure, lattice parameter, bulk density, relative density, and thermoelectric properties by XRD, density kit, ZEM-3, and LFA, respectively. In the same temperature range of 325 to 525 K, the thermoelectric characteristics of bulk n-type Bi2Se3 and p-type Bi0.4Sb1.6Te3 were higher than the literature data. The Bi2Se3 and Bi0.4Sb1.6Te3 bulk samples have maximum zT is 0.84 and 0.88 at 329 K, respectively, and are considered high-performance materials for use in thermoelectric devices.

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Published

2025-04-17

How to Cite

Ruamruk, S., Chayasombat, B., Namhongsa, W., Singsoog, K., Pilasuta, P., Vora-ud, A., Nakhowonge, R., & Seetawan, T. (2025). ENHANCED THERMOELECTRIC PROPERTIES of n-Bi2Se3 AND p-Bi0.4Sb1.6Te3 SYNTHESIZED BY USING HOT-PRESS METHOD. Suranaree Journal of Science and Technology, 32(1), 030266(1–6). https://doi.org/10.55766/sujst9078

Issue

Vol. 32 No. 1 (2025): January - February

Section

Research Article

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