Mg-3(Bi,Sb)(2)single crystals towards high thermoelectric performance
文献类型：期刊论文
| 作者 | Pan, Y; Yao, MY; Hong, XC; Zhu, YF; Fan, FR; Imasato, K; He, YK; Hess, C; Fink, J; Yang, J |
| 刊名 | ENERGY & ENVIRONMENTAL SCIENCE
 |
| 出版日期 | 2020-06-01 |
| 期号 | 6页码:1717 |
| ISSN号 | 1754-5692 |
| DOI | 10.1039/d0ee00838a |
| 文献子类 | Article |
| 英文摘要 | The rapid growth of the thermoelectric cooler market makes the development of novel room temperature thermoelectric materials of great importance. Ternary n-type Mg-3(Bi,Sb)(2)alloys are promising alternatives to the state-of-the-art Bi-2(Te,Se)(3)alloys but grain boundary resistance is the most important limitation. n-type Mg-3(Bi,Sb)(2)single crystals with negligible grain boundaries are expected to have particularly highzTbut have rarely been realized due to the demanding Mg-rich growth conditions required. Here, we report, for the first time, the thermoelectric properties of n-type Mg-3(Bi,Sb)(2)alloyed single crystals grown by a one-step Mg-flux method using sealed tantalum tubes. High weighted mobility similar to 140 cm(2)V(-1)s(-1)and a highzTof 0.82 at 315 K are achieved in Y-doped Mg(3)Bi(1.25)Sb(0.75)single crystals. Through both experimental angle-resolved photoemission spectroscopy and theoretical calculations, we denote the origin of the high thermoelectric performance from a point of view of band widening effect and electronegativity, as well as the necessity to form high Bi/Sb ratio ternary Mg-3(Bi,Sb)(2)alloys. The present work paves the way for further development of Mg-3(Bi,Sb)(2)for near room temperature thermoelectric applications. |
| WOS关键词 | CARRIER SCATTERING MECHANISM ; THERMAL-CONDUCTIVITY ; ZINTL COMPOUNDS ; TRANSPORT ; SB |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28006]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Pan, Y,Yao, MY,Hong, XC,et al. Mg-3(Bi,Sb)(2)single crystals towards high thermoelectric performance[J]. ENERGY & ENVIRONMENTAL SCIENCE,2020(6):1717. |
| APA | Pan, Y.,Yao, MY.,Hong, XC.,Zhu, YF.,Fan, FR.,...&Felser, C.(2020).Mg-3(Bi,Sb)(2)single crystals towards high thermoelectric performance.ENERGY & ENVIRONMENTAL SCIENCE(6),1717. |
| MLA | Pan, Y,et al."Mg-3(Bi,Sb)(2)single crystals towards high thermoelectric performance".ENERGY & ENVIRONMENTAL SCIENCE .6(2020):1717. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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