2011 Fiscal Year Final Research Report
Development of novel thermoelectric chalcogenides and investigation of their physical properties
| Project/Area Number |
22840021
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
SUEKUNI Koichiro 北陸先端科学技術大学院大学, マテリアルサイエンス研究科, 助教 (10582926)
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| Project Period (FY) |
2010 – 2011
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| Keywords | 熱電変換 / カルコゲナイド / 硫化物 / スピネル / テトラへドライト / 可変領域ホッピング |
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| Research Abstract |
We have synthesized the materials with cubic complex crystal structure ; spinels Cu_yFe_4Sn_<12> X_<32>(X=S, Se) and tetrahedrites Cu_<12-x> Tr_xSb_4S_<13>(Tr : Transition metal) and have investigated their thermoelectric properties. The result of study for spinels gave us information that the variable-range hopping conductors have a potential to be a good high-temperature thermoelectric material. Furthermore, we newly demonstrated that the tetrahedrites exhibit high thermoelectric performance due to the quite low lattice thermal conductivity.
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