| Fabrication and property of high-performance Ag-Pb-Sb-Te system semiconducting thermoelectric materials |
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| 引用本文： | ZHOU Min LI JingFengt WANG Heng. Fabrication and property of high-performance Ag-Pb-Sb-Te system semiconducting thermoelectric materials[J]. 科学通报(英文版), 2007, 52(7): 990-996. DOI: 10.1007/s11434-007-0124-1 |
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| 作者姓名： | ZHOU Min LI JingFengt WANG Heng |
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| 作者单位： | State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （Grant Nos. 50325207, 50310353, 50621201） and the National Basic Research Program of China （Grant Nos. 2007CB607504, 2007CB 607505） |
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| 摘 要： | High performance Ag-Pb-Sb-Te system thermoelectric bulk materials were fabricated by a combination of mechanical alloying (MA) and spark plasma sintering (SPS). Phase composition and microstructure of the resultant materials were investigated by X-ray diffraction (XRD) and scanning electron micros-copy (SEM) analysis. A special emphasis was paid to the effects of chemical composition, especially the Pb content on the thermoelectric properties of the Ag0.8Pb18 xSbTe20 samples, including electrical resistivity, Seebeck coefficient, power factor, thermal conductivity and dimensionless figure of merit. The present study reveals that the optimal composition of Ag0.8Pb18 xSbTe20 samples is Ag0.8Pb22.5SbTe20 and the maximum figure of merit (ZT) is 1.2 at 673 K.
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| 关 键 词： | 半导体热电材料 Ag-Pb-Sb-Te系统 制备 性能 |
| 收稿时间： | 2006-07-25 |
| 修稿时间： | 2006-07-252006-11-27 |
Fabrication and property of high-performance Ag-Pb-Sb-Te system semiconducting thermoelectric materials |
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| Zhou Min,Li JingFeng,Wang Heng. Fabrication and property of high-performance Ag-Pb-Sb-Te system semiconducting thermoelectric materials[J]. Chinese science bulletin, 2007, 52(7): 990-996. DOI: 10.1007/s11434-007-0124-1 |
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| Authors: | Zhou Min Li JingFeng Wang Heng |
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| Affiliation: | (1) State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China |
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| Abstract: | High performance Ag-Pb-Sb-Te system thermoelectric bulk materials were fabricated by a combination of mechanical alloying (MA) and spark plasma sintering (SPS). Phase composition and microstructure of the resultant materials were investigated by X-ray diffraction (XRD) and scanning electron micros-copy (SEM) analysis. A special emphasis was paid to the effects of chemical composition, especially the Pb content on the thermoelectric properties of the Ag0.8Pb18 xSbTe20 samples, including electrical resistivity, Seebeck coefficient, power factor, thermal conductivity and dimensionless figure of merit. The present study reveals that the optimal composition of Ag0.8Pb18 xSbTe20 samples is Ag0.8Pb22.5SbTe20 and the maximum figure of merit (ZT) is 1.2 at 673 K. |
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| Keywords: | thermoelectric materials mechanical alloying spark plasma sintering thermoelectric performance |
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