Mg3(Bi,Sb)2 single crystals towards high thermoelectric performance
dc.bibliographicCitation.firstPage | 1717 | |
dc.bibliographicCitation.issue | 6 | |
dc.bibliographicCitation.journalTitle | Energy & environmental science | eng |
dc.bibliographicCitation.lastPage | 1724 | |
dc.bibliographicCitation.volume | 13 | |
dc.contributor.author | Pan, Yu | |
dc.contributor.author | Yao, Mengyu | |
dc.contributor.author | Hong, Xiaochen | |
dc.contributor.author | Zhu, Yifan | |
dc.contributor.author | Fan, Fengren | |
dc.contributor.author | Imasato, Kazuki | |
dc.contributor.author | He, Yangkun | |
dc.contributor.author | Hess, Christian | |
dc.contributor.author | Fink, Jörg | |
dc.contributor.author | Yang, Jiong | |
dc.contributor.author | Büchner, Bernd | |
dc.contributor.author | Fu, Chenguang | |
dc.contributor.author | Snyder, G. Jeffrey | |
dc.contributor.author | Felser, Claudia | |
dc.date.accessioned | 2022-12-01T13:15:40Z | |
dc.date.available | 2022-12-01T13:15:40Z | |
dc.date.issued | 2020 | |
dc.description.abstract | The rapid growth of the thermoelectric cooler market makes the development of novel room temperature thermoelectric materials of great importance. Ternary n-type Mg3(Bi,Sb)2 alloys are promising alternatives to the state-of-the-art Bi2(Te,Se)3 alloys but grain boundary resistance is the most important limitation. n-type Mg3(Bi,Sb)2 single crystals with negligible grain boundaries are expected to have particularly high zT but have rarely been realized due to the demanding Mg-rich growth conditions required. Here, we report, for the first time, the thermoelectric properties of n-type Mg3(Bi,Sb)2 alloyed single crystals grown by a one-step Mg-flux method using sealed tantalum tubes. High weighted mobility ∼140 cm2 V−1 s−1 and a high zT of 0.82 at 315 K are achieved in Y-doped Mg3Bi1.25Sb0.75 single crystals. Through both experimental angle-resolved photoemission spectroscopy and theoretical calculations, we denote the origin of the high thermoelectric performance from a point of view of band widening effect and electronegativity, as well as the necessity to form high Bi/Sb ratio ternary Mg3(Bi,Sb)2 alloys. The present work paves the way for further development of Mg3(Bi,Sb)2 for near room temperature thermoelectric applications. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/10466 | |
dc.identifier.uri | http://dx.doi.org/10.34657/9502 | |
dc.language.iso | eng | |
dc.publisher | Cambridge : RSC Publ. | |
dc.relation.doi | https://doi.org/10.1039/d0ee00838a | |
dc.relation.essn | 1754-5706 | |
dc.rights.license | CC BY 3.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | |
dc.subject.ddc | 690 | |
dc.subject.other | Bismuth metallography | eng |
dc.subject.other | Chemical bonds | eng |
dc.subject.other | Electronegativity | eng |
dc.subject.other | Grain boundaries | eng |
dc.subject.other | Photoelectron spectroscopy | eng |
dc.subject.other | Single crystals | eng |
dc.subject.other | Thermoelectric equipment | eng |
dc.subject.other | Thermoelectricity | eng |
dc.subject.other | Angle resolved photoemission spectroscopy | eng |
dc.subject.other | Grain boundary resistance | eng |
dc.subject.other | Theoretical calculations | eng |
dc.subject.other | Thermo-Electric materials | eng |
dc.subject.other | Thermoelectric application | eng |
dc.subject.other | Thermoelectric cooler | eng |
dc.subject.other | Thermoelectric performance | eng |
dc.subject.other | Thermoelectric properties | eng |
dc.subject.other | Yttrium compounds | eng |
dc.title | Mg3(Bi,Sb)2 single crystals towards high thermoelectric performance | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IFWD | |
wgl.subject | Umweltwissenschaften | ger |
wgl.type | Zeitschriftenartikel | ger |
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