| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Preparation of Functional Gradient Material n-PbTe with Continuous Carrier Concentration |
ZHU Pin-Wen1, HONG You-Liang1, WANG Xin1, CHEN Li-Xue1, IMAI Yoshio2
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| 1State Key Lab for Superhard Materials, Jilin University, Changchun 130012 2National Institute for Materials Science, Tsukuba 305-0047, Japan |
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| Cite this article: |
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ZHU Pin-Wen, HONG You-Liang, WANG Xin et al 2010 Chin. Phys. Lett. 27 058102 |
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Abstract Functional gradient materials (FGMs) in thermoelectric materials can raise the maximal power output of the thermoelectric generator (TEG). We report an FGM of n-PbTe with continuous carrier concentration successfully prepared by a unidirectional solidification method. The continuous carrier concentration for n-PbTe was optimized by different dopants of PbI2, Al and Zr and solidifying temperature. The effective maximum outputting power for continuous FGM PbTe is about 30% larger than that for jointed FGM PbTe.
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| Keywords:
81.05.Hd
72.05.Jf
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Received: 25 November 2009
Published: 23 April 2010
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