Photoemission study of the electronic structure of valence band convergent SnSe
文献类型：期刊论文
| 作者 | Wang, CW; Xia, YYY; Tian, Z; Jiang, J; Li, BH; Cui, ST; Yang, HF; Liang, AJ; Zhan, XY; Hong, GH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2017 |
| 卷号 | 96期号:16页码:- |
| 关键词 | Performance Bulk Thermoelectrics Figure Merit Temperature Power Crystals |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.96.165118 |
| 文献子类 | 期刊论文 |
| 英文摘要 | IV-VI semiconductor SnSe has been known as the material with record high thermoelectric performance. The multiple close-to-degenerate (or "convergent") valence bands in the electronic band structure has been one of the key factors contributing to the high power factor and thus figure of merit in the SnSe single crystal. To date, there have been primarily theoretical calculations of this particular electronic band structure. In this paper, however, using angle-resolved photoemission spectroscopy, we perform a systematic investigation of the electronic structure of SnSe. We directly observe three predicted hole bands with small energy differences between their band tops and relatively small in-plane effective masses, in good agreement with the ab initio calculations and critical for the enhancement of the Seebeck coefficient while keeping high electrical conductivity. Our results reveal the complete band structure of SnSe and help to provide a deeper understanding of the electronic origin of the excellent thermoelectric performances in SnSe. |
| WOS关键词 | PERFORMANCE BULK THERMOELECTRICS ; FIGURE ; MERIT ; TEMPERATURE ; POWER ; CRYSTALS |
| 语种 | 英语 |
| WOS记录号 | WOS:000412700200002 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28770]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Wang, CW,Xia, YYY,Tian, Z,et al. Photoemission study of the electronic structure of valence band convergent SnSe[J]. PHYSICAL REVIEW B,2017,96(16):-. |
| APA | Wang, CW.,Xia, YYY.,Tian, Z.,Jiang, J.,Li, BH.,...&Chen, YL.(2017).Photoemission study of the electronic structure of valence band convergent SnSe.PHYSICAL REVIEW B,96(16),-. |
| MLA | Wang, CW,et al."Photoemission study of the electronic structure of valence band convergent SnSe".PHYSICAL REVIEW B 96.16(2017):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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