KMS Chongqing Institute of Green and Intelligent Technology, CAS
| Crystal structure of high-performance thermoelectric materials by high resolution neutron powder diffraction | |
Wu, Peng1,2 ; Ishikawa, Yoshihisa2; Hagihala, Masato2; Lee, Sanghyun2; Peng, Kunling4; Wang, Guoyu4; Torii, Shuki2; Kamiyama, Takashi2,3
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| 2018-12-15 | |
| 摘要 | SnSe has currently the highest figure of merit ZT, and is expected to be applied to thermoelectric devices, due to its intrinsic low lattice thermal conductivity. To further lower the lattice thermal conductivity and enhance the thermoelectric performance, we substituted the Sn and Se by Na and S, respectively. Structural changes by these substitutions were studied by high-resolution neutron powder diffraction experiments: the decreasing of the lattice constants and consequently the distortion of the Sn-polyhedron was observed in Na and S substituted SnSe. |
| 关键词 | Figure of merit Thermoelectric devices Lattice thermal conductivity Neutron powder diffraction |
| DOI | 10.1016/j.physb.2017.11.076 |
| 发表期刊 | PHYSICA B-CONDENSED MATTER
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| ISSN | 0921-4526 |
| 卷号 | 551页码:64-68 |
| 收录类别 | EI |
| WOS记录号 | WOS:000455012800016 |
| 语种 | 英语 |
