Band flattening and phonon-defect scattering in cubic SnSe-AgSbTe2 alloy for thermoelectric enhancement
文献类型：期刊论文
| 作者 | Wang, Hongxiang; Hu, Haoyang; Man, Na; Xiong, Chenglong; Xiao, Yukun; Tan, Xiaojian; Liu, Guoqiang; Jiang, Jun |
| 刊名 | MATERIALS TODAY PHYSICS
 |
| 出版日期 | 2021 |
| 卷号 | 16 |
| 英文摘要 | With multiple band valleys and intrinsic low thermal conductivity, rock-salt SnSe possesses great potential as a promising thermoelectric material. Herein, we prepare cubic SnSe-AgSbTe2 alloy and demonstrate the synergistically optimized electronic and thermal transport properties. For the former, AgSbTe2 alloying can tune the Fermi surface and promote the band flattening, concurrently improving the density of state effective mass and carrier concentration. For the latter, the strong phonon-defect scattering caused by AgSbTe2 alloying contributes to a great reduction of lattice thermal conductivity. Collectively, an obviously enhanced ZT(max) of 1.00 at 820 K and Z(Tave) of 0.70 (300-820 K) are achieved in Sn0.5Ag0.25Sb0.25Se0.5Te0.5. Moreover, AgSbTe2 alloying can also improve the mechanical property and the Vickers hardness reaches 1.90 Gpa, which is over four times higher than that of pristine SnSe. (C) 2020 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22322]  |
| 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), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Liu, GQ 3.Jiang, J (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 101408, Peoples R China. 4.Tan, XJ |
| 推荐引用方式 GB/T 7714 | Wang, Hongxiang,Hu, Haoyang,Man, Na,et al. Band flattening and phonon-defect scattering in cubic SnSe-AgSbTe2 alloy for thermoelectric enhancement[J]. MATERIALS TODAY PHYSICS,2021,16. |
| APA | Wang, Hongxiang.,Hu, Haoyang.,Man, Na.,Xiong, Chenglong.,Xiao, Yukun.,...&Jiang, Jun.(2021).Band flattening and phonon-defect scattering in cubic SnSe-AgSbTe2 alloy for thermoelectric enhancement.MATERIALS TODAY PHYSICS,16. |
| MLA | Wang, Hongxiang,et al."Band flattening and phonon-defect scattering in cubic SnSe-AgSbTe2 alloy for thermoelectric enhancement".MATERIALS TODAY PHYSICS 16(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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