POWER FACTOR OF Bi2Te3 AND Sb2Te3 ENHANCED BY HIGH DENSITY AND HARDNESS

被引：1
作者：
Ruamruk, Surasak [1 ,2 ]
Chayasombat, Bralee [3 ]
Singsoog, Kunchit [2 ]
Vora-ud, Athorn [4 ]
Namhongsa, Wanatchaporn [2 ]
Pilasuta, Panida [2 ]
Seetawan, Tosawat [1 ]
机构：
[1] Sakon Nakhon Rajabhat Univ, Program Biol, Fac Sci & Technol, 680 Nittayo Rd, Sakon Nakhon 47000, Thailand
[2] Sakon Nakhon Rajabhat Univ, Res & Dev Inst, Ctr Excellence Alternat Energy, Thermoelectr Res Lab, 680 Nittayo Rd, Sakon Nakhon 47000, Thailand
[3] Natl Met & Mat Technol Ctr MTEC, Thailand Sci Pk, Pathum Thani 12120, Thailand
[4] Sakon Nakhon Rajabhat Univ, Reseach & Dev Inst, Ctr Excellence Alternat Energy, Thin Films Res Lab, 680 Nattayo Rd, Sakon Nakhon 47000, Thailand
来源：
SURANAREE JOURNAL OF SCIENCE AND TECHNOLOGY | 2023年 / 30卷 / 05期
关键词：
Bi2Te3 and Sb2Te3; micro-Vickers hardness; power factor; thermoelectric materials; THERMOELECTRIC PROPERTIES; PERFORMANCE; BISMUTH; TELLURIDES;
D O I：
10.55766/sujst-2023-05-e02873
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The power factor is an indicator of the performance of thermoelectric materials. Many researchers improved the thermoelectric conversion efficiency of materials by various techniques such as doping, substitution, and decreasing particle size for dense samples. We present Bi2Te3 and Sb2Te3 materials prepared by hot pressing method at 673 K for 2 h in Ar atmosphere. Bulk samples were investigated for their crystalline structure, hardness, and power factor by XRD, micro -Vickers hardness, and ZEM-3, respectively. The Seebeck coefficient, electrical resistivity, and power factor of n- Bi2Te3 and p- Bi2Te3 bulk samples were higher than literature data in the same temperature range of 325 to 475 K. The higher power factor value of Bi2Te3 and Bi2Te3 bulk samples of this study have resulted from the high density and high micro -Vickers hardness of the samples.
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页数：5
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