Lattice dynamics of thermoelectric palladium sulfide
文献类型：期刊论文
| 作者 | Chen, Liu-Cheng; Peng, Qing; Yu, Hao; Pang, Hong-Jie; Jiang, Bin-Bin; Su, Lei; Shi, Xun; Chen, Li-Dong; Chen, Xiao-Jia |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2019-08-25 |
| 卷号 | 798页码:484-492 |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2019.05.280 |
| 英文摘要 | Highly efficient thermoelectric materials always have low thermal conductivities. Their phonon spectrum information is essential for understanding the procedure of thermal transport on thermoelectrics. Recently, palladium sulfide was found to be a potential thermoelectric material. However, the high thermal conductivity limits its thermoelectric performance and technological applications. Here, the phonon dispersion and phonon density of state in PdS are presented by using the first-principles theory. The phonon modes are assigned and compared with experiments. The evolution of optical modes with pressure is studied by using Raman spectroscopy. The low-energy and high-energy phonon bands are related to the vibrations of the heavy atom and the light atom, respectively. By combining Raman scattering and X-ray diffraction measurements, we obtain the mode-Grfineisen parameters for the detected phonon modes. The small mode-Grfineisen parameters indicate a weak anharmonicity in this material. This offers an explanation for its high thermal conductivity. The evolution of linewidths with pressure accounts for the decrease of the thermal conductivity upon compression. (C) 2019 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000471631300055 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/82640]  |
| 专题 | 中国科学院化学研究所 |
| 作者单位 | Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Liu-Cheng,Peng, Qing,Yu, Hao,et al. Lattice dynamics of thermoelectric palladium sulfide[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,798:484-492. |
| APA | Chen, Liu-Cheng.,Peng, Qing.,Yu, Hao.,Pang, Hong-Jie.,Jiang, Bin-Bin.,...&Chen, Xiao-Jia.(2019).Lattice dynamics of thermoelectric palladium sulfide.JOURNAL OF ALLOYS AND COMPOUNDS,798,484-492. |
| MLA | Chen, Liu-Cheng,et al."Lattice dynamics of thermoelectric palladium sulfide".JOURNAL OF ALLOYS AND COMPOUNDS 798(2019):484-492. |
入库方式： OAI收割
来源：化学研究所
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