Development of p- and n-type organic thermoelectric materials with porous structure
| Project/Area Number |
18K05260
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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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| Review Section |
Basic Section 35030:Organic functional materials-related
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 分子性導体 / 超分子化学 / ハロゲン結合 / 水素結合 / 熱電材料 / 電荷秩序 / 分子性固体 / ヨウ素結合 / 多孔質 / 廃熱利用 |
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| Outline of Final Research Achievements |
For (EDO-TTF-I)2ClO4, the electrical resistivity, Seebeck coefficient, and thermal conductivity were simultaneously measured. The electrical resistivity and Seebeck coefficient showed semiconducting behavior from room temperature to around 190 K of the phase transition temperature, and metallic behavior below 190 K. On the other hand, the thermal conductivity showed a small value of 0.5 to 1 W K-1 m-1 at room temperature, and there was no significant change in the phase transition temperature. Therefore, the thermal conductivity of this material is dominated by the lattice thermal conductivity. EDO-TTF-X2 (X = Br, I), X2BTBT (X = Br, I), quaterthiophene derivatives, TCNQ derivatives and their complexes were examined for the purpose of developing new p-type and n-type materials utilizing supramolecular interactions.
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| Academic Significance and Societal Importance of the Research Achievements |
持続可能な社会を実現する上で、高性能熱電変換材料の開発が急務である。しかしながら、実用レベルに達しているのは、希少・毒性元素を含んだ無機材料が多く、熱電材料の普及を妨げている。そこで本研究では、研究が遅れている低分子系熱電材料の開発を行った。また、微小かつ非常に脆いという有機結晶の性質が低分子系熱電材料の研究を困難にしていることから、このような試料の熱電物性を正しく評価するための試料ホルダーの開発を行った。その結果、実用レベルには達していないものの、有機結晶で導電性を有しつつ、1 W K-1 m-1以下の低い熱伝導率を示す物質を見出し、熱伝導率を抑制するための知見が得られた。
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Report
(5 results)
Research Products
(37 results)
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[Journal Article] Optical Study of Electronic Structure and Photoinduced Dynamics in the Organic Alloy System [(EDO-TTF)0.89(MeEDO-TTF)0.11]2PF62019
Author(s)
T. Ishikawa, Y. Urasawa, T. Shindo, Y. Okimoto, S. Koshihara, S. Tanaka, K. Onda, T. Hiramatsu, Y. Nakano, K. Tanaka, H. Yamochi
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Journal Title
Appl. Sci.
Volume: 9
Issue: 6
Pages: 1174-1174
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Molecular Structure, Optical, and Magnetic Properties of Free-Base Naphthalocyanine Dianions2018
Author(s)
D. V. Konarev, S. S. Khasanov, Y. Nakano, A. F. Shestakov, M Ishikawa, A. Otsuka, H. Yamochi, H. Kitagawa, R. N. Lyubovskaya
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Journal Title
Eur. J. Org. Chem.
Volume: 2018
Issue: 26
Pages: 3410-3415
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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