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The unique evolution of transport bands and thermoelectric performance enhancement by extending low-symmetry phase to high temperature in tin selenide

文献类型：期刊论文

作者Peng, Kunling5,6; Zhang, Bo2; Wu, Hong1,3; Che, Hailiang5,6; Sun, Xuefeng5,6; Ying, Jianjun5,6; Wang, Guiwen1,3; Sun, Zhe2; Wang, Guoyu4; Zhou, Xiaoyuan1,3
刊名JOURNAL OF MATERIALS CHEMISTRY C
出版日期2020-07-21
卷号8期号:27页码:9345-9351
ISSN号2050-7526
DOI10.1039/d0tc01318h
通讯作者Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn) ; Chen, Xianhui(chenxh@ustc.edu.cn)
英文摘要Thermoelectric conversion is a promising route to convert heat into electricity. In this process, phase transition may induce an unexpected consequence under certain conditions. In this work, we find that the extension of a low-temperature phase with a low-symmetry lattice structure, which has excellent electrical properties and low thermal conductivity, enhances the thermoelectric performanceviaa sulfur solid solution in SnSe-based thermoelectric materials. PeakzTvalues of 1.14 and 0.94 are obtained along theb- andc-axes of the SnSe(0.7)S(0.3)single crystal at 820 K, which are about 41% and 27% higher than those of the undoped SnSe single crystals, by extending the low-symmetry structure in this experiment. Band structure calculations and angle-resolved photoemission spectroscopy (ARPES) suggest that the unique evolution of the transport bands with temperature in the SnSe-based materials should be responsible for the abnormal electrical behavior and large Seebeck coefficient in the low-symmetry structure.
资助项目National Key R&D Program of China[2019YFA0704901] ; National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[11888101] ; National Natural Science Foundation of China[11904348] ; National Natural Science Foundation of China[U1832209] ; National Natural Science Foundation of China[11874336] ; China Postdoctoral Science Foundation[2018M640585] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Shenzhen Science and Technology Innovation Committee[JCYJ20170818155752559] ; National Basic Research Program of China[2016YFA0300103]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000549153600021
出版者ROYAL SOC CHEMISTRY
源URL[http://119.78.100.138/handle/2HOD01W0/11355]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Zhou, Xiaoyuan; Chen, Xianhui
作者单位1.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
2.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China
3.Chongqing Univ, Inst Adv Interdisciplinary Studies, Chongqing 401331, Peoples R China
4.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
5.Univ Sci & Technol China, Dept Phys, Hefei 230026, Anhui, Peoples R China
6.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Kunling,Zhang, Bo,Wu, Hong,et al. The unique evolution of transport bands and thermoelectric performance enhancement by extending low-symmetry phase to high temperature in tin selenide[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(27):9345-9351.
APA Peng, Kunling.,Zhang, Bo.,Wu, Hong.,Che, Hailiang.,Sun, Xuefeng.,...&Chen, Xianhui.(2020).The unique evolution of transport bands and thermoelectric performance enhancement by extending low-symmetry phase to high temperature in tin selenide.JOURNAL OF MATERIALS CHEMISTRY C,8(27),9345-9351.
MLA Peng, Kunling,et al."The unique evolution of transport bands and thermoelectric performance enhancement by extending low-symmetry phase to high temperature in tin selenide".JOURNAL OF MATERIALS CHEMISTRY C 8.27(2020):9345-9351.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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