Elucidation of mechanism on photo-induced electrical properties developing in narrow-bandgap ferroelectric material thin films
| Project/Area Number |
24656381
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Nagoya University |
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Principal Investigator |
SAKAMOTO Wataru 名古屋大学, エコトピア科学研究所, 准教授 (50273264)
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| Co-Investigator(Renkei-kenkyūsha) |
YOGO Toshinobu 名古屋大学, エコトピア科学研究所, 教授 (00135310)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 強誘電特性 / バンドギャップ / 光誘起電流 / 光起電力 / 薄膜作製 |
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| Research Abstract |
Fabrication of narrow bandgap ferroelectric thin films was carried out by the chemical solution deposition process that chemical composition control was facile, and the elucidation of photo-induced electrical properties under the visible light irradiation was performed. The existence of the self-bias electric field in the film after the preparation was clarified by the behavior of the photo-induced electric current. In addition, photo-induced electrical properties were greatly influenced by bandgap and ferroelectric properties, the polarization direction could turn over the photo-induced current and photovoltage by poling treatment with applying an electric field more than a coercive field. For the further properties improvement, it was effective to prepare the composites with noble metal nanoparticles.
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Report
(3 results)
Research Products
(24 results)
