논문 해외 국제전문학술지(SCI급) ENHANCED THERMOELECTRIC PROPERTIES OF AGSBTE2 OBTAINED BY CONTROLLING HETEROPHASES WITH CE DOPING
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2017-07
- 저자명 오민욱
- 학술지명 SCIENTIFIC REPORTS
- 발행처명 NATURE PUBLISHING GROUP
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 9
홈페이지논문 초록 (Abstract)
We report the enhanced thermoelectric properties of Ce-doped AgSbTe2 (AgSb1-xCexTe2) compounds. As the Ce contents increased, the proport ion of heterophase Ag2Te in the AgSbTe2 gradually decreased, along with the size of the crystals. The electrical resistivity and Seebeck coefficient were dramatically affected by Ce doping and the lattice thermal conductivity was reduced. The presence of nanostruc tured Ag2Te heterophases resulted in a greatly enhanced dimensionless f igure of merit, ZTof 1.5 at 673 K. These findings highlight the imp ortance of the heterophase and doping control, which determines both e lectrical and thermal properties.