| Project/Area Number |
26630124
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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 | Tokyo Institute of Technology |
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Principal Investigator |
Hanna Jun-ichi 東京工業大学, 科学技術創成研究院, 研究員 (00114885)
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| Research Collaborator |
Higuchi Miho
Dogishi Masaki
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 液晶 / 強誘電性 / 電荷注入 / キラルスメクチックC / 有機半導体 / SmC*相 / 強誘電性液晶 / 光電流 / 起電力 |
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| Outline of Final Research Achievements |
According to the experimental results, it is concluded that enhanced charge injection in a ferroelectric liquid crystalline phase was not governed by ferroelectricity, i.e., remanent polarization of the material, but by the dipole of the molecule aligned at the electrode interface. Therefore, the present phenomena is not limited in ferroelectric liquid crystals, and will be found in various liquid crystalline materials with large dipole.
On the other hand, it is concluded that photoconductivity without external biases observed in polarized ferroelectric liquid crystals is attributed to the effect of internal electric field caused by polarization of the liquid crystal on photo-generation of charges and their charge transport. This generality should be confirmed by using other ferroelectric liquid crystals.
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