2023 Fiscal Year Final Research Report
Enhanced photostability of surface potential generated by spontaneous orientation polarization
| Project/Area Number |
21K05208
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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 | Gunma University (2022-2023)
Chiba University (2021) |
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Principal Investigator |
Tanaka Yuya 群馬大学, 大学院理工学府, 准教授 (90780065)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | エレクトレット / 自発配向分極 / 極性分子 / 脱分極 / 巨大表面電位 / 有機発光ダイオード / 振動発電 / エネルギーハーベスティング |
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| Outline of Final Research Achievements |
An electret is an insulator that permanently retains electric charge or polarization and is used in various devices such as vibration energy harvesters and sensors. However, its fabrication requires a charging process. To address this issue, we are advancing the application of polar organic molecules that spontaneously orient as electrets. Nonetheless, thin films made of polar organic molecules depolarize upon light exposure. Therefore, in this study, we prepared samples with an insulating layer inserted between the thin film and the underlying electrode and investigated the depolarization process. As a result, we successfully achieved samples with high photostability.
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| Free Research Field |
有機エレクトロニクス
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| Academic Significance and Societal Importance of the Research Achievements |
エレクトレットとは半永久的に電荷，もしくは電気分極を有する絶縁体であり，振動発電素子やセンサをはじめ様々なデバイスに利用されているが，その作製には荷電処理が必要であった．この課題を解決するために，我々は自発的に配向する極性有機分子のエレクトレット応用を進めている．結果として荷電処理を必要としない振動発電素子が実現できているが，その光に対する安定性は高くはなった．本研究を通じて光安定性の高いサンプルを開発できるようになったので，振動発電素子の実用化が進むとともに，他のデバイスへの応用も広がると期待できる．
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