Realizing high thermoelectricity in polycrystalline tin sulfide via manipulating fermi surface anisotropy and phonon dispersion
文献类型：期刊论文
| 作者 | Wu, H.3,4; Peng, K.3; Zhang, B.1; Gong, X. N.1; Feng, Z. Z.2; Zhang, X. M.2; Xi, M.3; Yan, X. M.3; Zhang, Y. S.2; Wang, G. Y.4 |
| 刊名 | MATERIALS TODAY PHYSICS
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 14页码:10 |
| ISSN号 | 2542-5293 |
| 关键词 | Thermoelectric SnS Fermi surface anisotropy Phonon dispersion Lattice dynamics |
| DOI | 10.1016/j.mtphys.2020.100221 |
| 通讯作者 | Wang, G. Y.(guoyuw@cigit.ac.cn) ; Lu, X.(luxu@cqu.edu.cn) ; Zhou, X. Y.(xiaoyuan2013@cqu.edu.cn) |
| 英文摘要 | Tin sulfide (SnS) with an analogous structure to SnSe has attracted increasing attentions owing to its low cost, earth abundance, and environmental compatibility. In this work, the thermoelectric properties of polycrystalline SnS1-xSex (0 <= x <= 0.5) are systematically investigated. With the assistance of the theoretical calculations and experimental results, the intrinsic characteristic of the markedly diminished lattice thermal conductivity with increasing Se alloying content is due to the decreased phonon vibration frequency associated with the reduced phonon group velocity and the strengthened phonon scattering. In addition, compared with SnS, the more localized Sn_5s(2) lone pair electrons in SnS0.5Se0.5 are propitious to strengthen the anisotropy of Fermi surface and lattice anharmonicity, leading to high quality factor (B). Finally, a highest zT value (similar to 1.1) at 820 K is obtained for Na0.02Sn0.98S0.5Se0.5 by optimizing the carrier concentration through Na doping. These results contribute to a comprehensive understanding of the modification of phonon dispersion and band structure of SnS-SnSe solid solutions and indicate their high thermoelectric performance in SnS-based materials. (C) 2020 Elsevier Ltd. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51672270] ; National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11904348] ; Fundamental Research Funds for the Central Universities, China[2018CDQYWL0048] ; Fundamental Research Funds for the Central Universities, China[106112016CDJZR308808] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2015JCYJBX0026] ; China Postdoctoral Science Foundation[2018M640585] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000572900300002 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/11844]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Wang, G. Y.; Lu, X.; Zhou, X. Y. |
| 作者单位 | 1.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China 4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, H.,Peng, K.,Zhang, B.,et al. Realizing high thermoelectricity in polycrystalline tin sulfide via manipulating fermi surface anisotropy and phonon dispersion[J]. MATERIALS TODAY PHYSICS,2020,14:10. |
| APA | Wu, H..,Peng, K..,Zhang, B..,Gong, X. N..,Feng, Z. Z..,...&Zhou, X. Y..(2020).Realizing high thermoelectricity in polycrystalline tin sulfide via manipulating fermi surface anisotropy and phonon dispersion.MATERIALS TODAY PHYSICS,14,10. |
| MLA | Wu, H.,et al."Realizing high thermoelectricity in polycrystalline tin sulfide via manipulating fermi surface anisotropy and phonon dispersion".MATERIALS TODAY PHYSICS 14(2020):10. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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