Quasi-two-dimensional GeSbTe compounds as promising thermoelectric materials with anisotropic transport properties
文献类型：期刊论文
| 作者 | Wei, Tian-Ran; Hu, Ping; Chen, Hongyi; Zhao, Kunpeng; Qiu, Pengfei; Shi, Xun; Chen, Lidong |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2019-02-04 |
| 卷号 | 114期号:5 |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.5083863 |
| 文献子类 | Article |
| 英文摘要 | Pseudo-binary GeSbTe alloys, best known as phase-change materials, are quasi-two-dimensional semiconductors in their stable trigonal phases with high electrical conductivity and low thermal conductivity, but their thermoelectric properties have not been systematically investigated. Here, in this letter, we prepared polycrystalline Ge2Sb2Te5, GeSb2Te4, and GeSb4Te7 bulk materials and studied the thermoelectric transport properties. Large anisotropy in Seebeck coefficient as well as in electrical conductivity is observed, which is not commonly reported in polycrystalline thermoelectric materials. Combining experimental study and theoretical calculations, one can find that this phenomenon is attributed to the asymmetry of a material's band structure. Maximal zT values of 0.46-0.60 are achieved at 750 K, indicating that GeSbTe-based compounds are promising thermoelectric materials for mid-temperature applications. Published under license by AIP Publishing. |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27342]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Wei, Tian-Ran,Hu, Ping,Chen, Hongyi,et al. Quasi-two-dimensional GeSbTe compounds as promising thermoelectric materials with anisotropic transport properties[J]. APPLIED PHYSICS LETTERS,2019,114(5). |
| APA | Wei, Tian-Ran.,Hu, Ping.,Chen, Hongyi.,Zhao, Kunpeng.,Qiu, Pengfei.,...&Chen, Lidong.(2019).Quasi-two-dimensional GeSbTe compounds as promising thermoelectric materials with anisotropic transport properties.APPLIED PHYSICS LETTERS,114(5). |
| MLA | Wei, Tian-Ran,et al."Quasi-two-dimensional GeSbTe compounds as promising thermoelectric materials with anisotropic transport properties".APPLIED PHYSICS LETTERS 114.5(2019). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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