| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Thermoelectric Properties of Te-Doped Ba0.32Co4Sb12−xTexPrepared at HPHT |
| REN Guo-Zhong1, LIU Yang1, MA Hong-An2, SU Tai-Chao2, LIN Le-Jing1, DENG Le2, JIANG Yi-Ping2, ZHENG Shi-Zhao2, JIA Xiao-Peng2**
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1Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan 411105
2National Lab of Superhard Materials, Jinlin University, Changchun 130012
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REN Guo-Zhong, LIU Yang, MA Hong-An et al 2011 Chin. Phys. Lett. 28 048401 |
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Abstract Polycrystalline skutterudites Ba0.32Co4Sb12−xTex (nominally x=0.1–0.7) are synthesized by the high pressure and high temperature (HPHT) method. The influence of Te substitution on electrical transport properties are investigated in the temperature range of 300–710 K. All the samples show n−type conduction. It is found that the presence of Te substantially decreases electrical resistivity without any detrimental effect on the Seebeck coefficients, which improves the power factor. Among all the samples, Ba0.32Co4Sb11.5Te0.5 shows the highest thermoelectric figure of merit of 0.76 at 710 K.
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| Keywords:
84.60.Rs
72.15.Jf
81.05.Cy
81.05.Dz
81.05.Ea
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Received: 23 April 2010
Published: 29 March 2011
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