2014 Fiscal Year Final Research Report
Development of liquid-phase growth using a sliding boat for preparation of Bi2Te3-based thermoelectric materials
| Project/Area Number |
24560884
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Shimane University |
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Principal Investigator |
KITAGAWA Hiroyuki 島根大学, 総合理工学研究科(研究院), 准教授 (00325044)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 熱電変換材料 / 結晶配向 / キャリア濃度 / ゼーベック係数 / 電気抵抗率 |
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| Outline of Final Research Achievements |
A liquid-phase growth process using a graphite sliding boat was applied for synthesis of p-type Bi_<0.5>Sb_<1.5>Te_<3> and Cu-doped n-type Bi_<2>Te_<2.85>Se_<0.15> thermoelectric materials. Thick sheets and bars of 1 mm and 2 mm in thickness having preferable crystal orientation for thermoelectric conversion were successfully prepared by the process. By control of carrier concentration, the large power factor of approximately 4 mW/K2m was obtained near 300 K for both p- and n-type materials with good reproducibility.
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| Free Research Field |
材料物性
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