| 학회 | 한국재료학회 |
| 학술대회 | 2006년 가을 (11/03 ~ 11/03, 수원대학교) |
| 권호 | 12권 2호 |
| 발표분야 | 에너지 환경재료 |
| 제목 | Electronic Transport Properties of Sn-filled/Te-doped CoSb3 |
| 초록 | Filled skutterudites are one of the superior thermoelectric materials at high temperature. Thermoelectric figure of merit can be improved by reducing the lattice thermal conductivity through filling the voids in the skutterudite structure. This effect is so-called “rattling effect” and the void fillers act as phonon scattering centers. In this study, Sn-filled/Te-doped CoSb3 skutterudites (SnzCo4Sb11.2Te0.8) [1,2] were prepared and their filling effects on the thermoelectric and electronic transport properties were investigated. Seebeck coefficient and Hall coefficient confirmed that all the samples showed the p-type conductivity. Temperature dependence of electrical resistivity suggested that SnzCo4Sb11.2Te0.8 is a highly degenerate semiconducting material. Thermal conductivity was considerably reduced by Sn filling and the lattice contribution was dominant. Acknowledgments: This work was supported by the Regional Innovation Center (RIC) Program conducted by the Ministry of Commerce, Industry and Energy of Korean Government. [1] G.S. Nolas, H. Takizawa, T. Endo, H. Sellinschegg, D.C. Johnson, Appl. Phys. Lett. 77 (2000) 52. [2] H. Takizawa, K. Mimura, M. Ito, T. Sizuki, T. Endo, J. Alloys & Comp. 282 (1999) 79. |
| 저자 | Seok-Youn Yun1, Young-Song Kwon2, Jae-Yong Jung1, Soon-Chul Ur2, Il-Ho Kim1 |
| 소속 | 1Department of Materials Science and Engineering/ReSEM, 2Chungju National Univ. |
| 키워드 | Thermoelectric; Skutterudite |
