Synthesis and thermoelectric properties of Mn-doped AgSbTe2 compounds
文献类型：期刊论文
| 作者 | Zhang, H ; Luo, J ; Zhu, HT ; Liu, QL ; Liang, JK ; Li, JB ; Liu, GY |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2012 |
| 卷号 | 21期号:10 |
| 关键词 | FIGURE-OF-MERIT PERFORMANCE ALLOYS AG2TE |
| ISSN号 | 1674-1056 |
| 通讯作者 | Luo, J (reprint author), Chinese Acad Sci, Inst Phys, Beijiang Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Polycrystalline p-type Ag0.9Sb1.1-xMnxTe2.05 (x = 0.05, 0.10, and 0.20) compounds have been prepared by a combined process of melt-quenching and spark plasma sintering. The sample composition of Ag0.9Sb1.1xMnxTe2.05 has been specially designed in order to achieve the doping effect by replacing part of Sb with Mn and to present the uniformly dispersed Ag2Te phase in the matrix by adding insufficient Te, which is beneficial for optimizing the electrical transport properties and enhancing the phonon scattering effect. All the samples have the NaCl-type structure according to our X-ray powder diffraction analysis. After the treatment of spark plasma sintering, only the sample with x = 0.20 has a small amount of MnTe2 impurities. The thermal analysis indicates that a tiny amount of Ag-2 Te phase exists in all these samples. The presence of the MnTe2 impurity with high resistance and high thermal conductivity leads to the deteriorative thermoelectric performance of the sample with x = 0.20 due to the decreased electrical transport properties and the increased thermal conductivity. In contrast, the sample with x - 0.10 exhibits enhanced thermoeletric properties due to the Mn-doping effect. A dimensionless thermoelectric figure of merit of 1.2 is attained for the sample with x = 0.10 at 573 K, showing promising thermoelectric properties in the medium temperature range. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [11144002, 51172276] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54412]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, H,Luo, J,Zhu, HT,et al. Synthesis and thermoelectric properties of Mn-doped AgSbTe2 compounds[J]. CHINESE PHYSICS B,2012,21(10). |
| APA | Zhang, H.,Luo, J.,Zhu, HT.,Liu, QL.,Liang, JK.,...&Liu, GY.(2012).Synthesis and thermoelectric properties of Mn-doped AgSbTe2 compounds.CHINESE PHYSICS B,21(10). |
| MLA | Zhang, H,et al."Synthesis and thermoelectric properties of Mn-doped AgSbTe2 compounds".CHINESE PHYSICS B 21.10(2012). |
入库方式： OAI收割
来源：物理研究所
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