| Project/Area Number |
26630138
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
Nagata Takahiro 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, MANA研究者 (10421439)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 強誘電体 / 表面電荷 / ナノ界面 / 焦電性 / π電子伝導 / 電荷蓄積 / π電子制御 / 光電効果 |
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| Outline of Final Research Achievements |
Ferroelectric materials exhibit spontaneous polarization and surface screening charge without the application of an electric field due to a lack of inversion symmetry and ionic bonds. In this research, we demonstrated the resistivity control of π conjugated materials on a ferroelectric material: LiNbO3 (LN) by the spontaneous polarization and pyroelectricity, which can be applied to sensor applications. We also demonstrated the screening charge localization by using a Schottky contact with LN, suggesting that the LN surface harvests electric energy from the environment. By combining these results, we found the possibility of a new sensor device that can be operated autonomously without external electrical source.
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