논문 해외 국제전문학술지(SCI급) Effect of Ag or Sb addition on the thermoelectric properties of PbTe
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2010-12
- 저자명 오민욱
- 학술지명 JOURNAL OF APPLIED PHYSICS
- 발행처명 AMER INST PHYSICS
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
홈페이지논문 초록 (Abstract)
In this study, the effect of Ag or Sb addition on the thermoelectric properties of PbTe including the Seebeck coefficient, the electrical resistivity, and the thermal conductivity, was studied in the temperature range from 323 to 723 K. The major carriers in the Ag-doped and the Sb-doped PbTe are holes and electrons, respectively. A degenerate semiconductor behavior in the electrical transport properties was observed in the Ag-doped, whereas the semi-metallic in the Sb-doped. It was suggested from the results of the Hall effect measurement and the Seebeck coefficient that the effective mass was significantly altered by the Sb-doping. The maximum dimensionless figure of merit, ZT, of Pb(1-x)Ag(x)Te and Pb(1-x)Sb(x)Te (x = 0.1) alloys showed 0.27 and 0.62 at 723 K, respectively. Based on the analysis of the Seebeck coefficient of the Ag or the Sb-doped PbTe, the interaction between Ag and Sb in PbTe, as expected in the AgPb(m)SbTe(m+2) (LAST-m), may be supposed. (c) 2010 American Institute of Physics. [doi: 10.1063/1.3517088]