Refined band structure plus enhanced phonon scattering realizes thermoelectric performance optimization in CuI-Mn codoped SnTe
文献类型：期刊论文
| 作者 | Wu, Gang; Guo, Zhe; Zhang, Qiang; Wang, Xuemei; Chen, Lidong; Tan, Xiaojian; Sun, Peng; Liu, Guo-Qiang; Yu, Bo; Jiang, Jun |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2021 |
| 卷号 | 9期号:22页码:13065-13070 |
| 关键词 | TRANSPORT-PROPERTIES RESONANT STATE CONVERGENCE SOLUBILITY EFFICIENCY ALLOYS CATION POWER MG CD |
| 英文摘要 | With the same crystal structure and a similar band structure, SnTe is regarded as an eco-friendly alternative to PbTe for the mid-temperature power generation application, but its thermoelectric performance suffers from a relatively low power factor and high thermal conductivity. In this work, we report the synergistic effects of CuI-Mn codoping in SnTe to improve the ZT value. It is found that tiny CuI alloying obviously decreases the carrier mobility and thus reduced the electrical conductivity and electronic thermal conductivity, while Mn doping promotes the valence band convergence and greatly increases the Seebeck coefficient. Moreover, Mn doping introduces many phonon scattering centers including nanoprecipitations, dislocations and point defects, which suppress the lattice thermal conductivity to 0.61 W m(-1) K-1 at 800 K. Consequently, the Sn0.89Mn0.11Te0.99(CuI)(0.01) sample exhibits a peak ZT value of 1.42 at 800 K and an average ZT of 0.68 between 300 and 830 K. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21928]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Jiang, J (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. 2.Jiang, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Tan, XJ |
| 推荐引用方式 GB/T 7714 | Wu, Gang,Guo, Zhe,Zhang, Qiang,et al. Refined band structure plus enhanced phonon scattering realizes thermoelectric performance optimization in CuI-Mn codoped SnTe[J]. JOURNAL OF MATERIALS CHEMISTRY A,2021,9(22):13065-13070. |
| APA | Wu, Gang.,Guo, Zhe.,Zhang, Qiang.,Wang, Xuemei.,Chen, Lidong.,...&Jiang, Jun.(2021).Refined band structure plus enhanced phonon scattering realizes thermoelectric performance optimization in CuI-Mn codoped SnTe.JOURNAL OF MATERIALS CHEMISTRY A,9(22),13065-13070. |
| MLA | Wu, Gang,et al."Refined band structure plus enhanced phonon scattering realizes thermoelectric performance optimization in CuI-Mn codoped SnTe".JOURNAL OF MATERIALS CHEMISTRY A 9.22(2021):13065-13070. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。