Thermoelectric properties of natural superlattice crystals with low dimensional electric conduction layers
| Project/Area Number |
21360337
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kobe University (2010-2011)
Kyoto University (2009) |
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Principal Investigator |
TANAKA Katsushi 神戸大学, 大学院・工学研究科, 教授 (30236575)
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| Co-Investigator(Kenkyū-buntansha) |
岡本 範彦 京都大学, 工学研究科, 助教 (60505692)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2010: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
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| Keywords | 不定比化合物 / マグネリ相 / シアー構造 / 低次元電導体 / 熱電材料 / 熱電変換材料 / 量子井戸 / 低次元化合物 |
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| Research Abstract |
In this study, we demonstrate the efficiency as thermoelectric materials of off-stoichiometric oxide semiconductor in terms of electric and thermal conductivity. We succeed to obtain the value of dimensionless figure of merit to be 0. 3 in off-stoichiometric titanium oxide, that is quite large for ubiquitous oxides. The large value is due to a strong phonon scattering at crystallographic shear structure which is largely introduced by a thermal treatment.
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Report
(4 results)
Research Products
(11 results)
