논문 해외 국제전문학술지(SCI급) Effect of La-doping on AgSbTe2 thermoelectric compounds
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2016-01
- 저자명 오민욱
- 학술지명 JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- 발행처명 KOREAN PHYSICAL SOC
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 9
홈페이지논문 초록 (Abstract)
Ag(Sb1-x La (x) )Te-2 compounds (x = 0, 0.01, 0.02, 0.03, and 0.05) were fabricated to study the effect of La-doping on the thermoelectric properties by using a spark-plasma-sintering process. All specimens were nearly single-phase AgSbTe2 with a small amount of Ag2Te. The La doping in AgSbTe2 resulted in a reduction in the electrical and the thermal conductivity but increased the Seebeck coefficient. A small amount of La doping increased the Seebeck coefficient because of the electron filtering effect. The maximum figure of merit was 1.50 due to the enhanced power factor and extremely low thermal conductivity.