| Project/Area Number |
18K03901
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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 18030:Design engineering-related
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| Research Institution | Tsuyama National College of Technology |
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Principal Investigator |
Kobayashi Toshiro 津山工業高等専門学校, 総合理工学科, 嘱託教授 (70563865)
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| Project Period (FY) |
2018-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | OLED / Delamination / Flexible semiconductor, / Compressive strain / delamination / buckling / thin films / polimer / フレキシブル / 有機EL / 有機半導体 / 剥離 / 密着力 / 座屈 / 設計工学 / 薄膜 / 屈曲性 / 損傷 |
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| Outline of Final Research Achievements |
In this study, we examined the delamination damage (buckling) prevention technology for flexible organic semiconductor elements, which has become a problem in the industry, and evaluation and design methods, and obtained the following conclusions. We designed and prototyped a flexural tester, and conducted flexural tests using Al and Ag alloy thin films for electrodes formed on PET substrates with a thickness of 0.1 mm, and grasped the conditions for buckling and peeling. The peel strength of the Ag electrode layer is 5 [N] or more when the lower layer is Alq3, but it is as low as 1 [N] with CBP. It was found that it can be improved to ~5 [N]. We obtained a prospect that the delamination (wrinkle) phenomenon can be roughly explained by the equation of buckling. In addition, the experimental value was smaller than the calculated value.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の最終的な用途は、ウェアラブルコンピュータ、フレキシブルテレビ等多岐にわたる
もので、社会的な意義としてはイノベーションにより生活様式を変革させる可能性を有する。さらに、これまでは、素子の発光効率や寿命などの電子工 学的な取り組みは行われてきたが、屈曲性の改善や評価手法 といった機械工学的な取り組み事例は少く、薄膜の機械的評価手法を有機電子素子に展開する電子工学、機械工学、有機化学などの境界領域に関する研究で、学際的な取り組みに学術的な意義がある。
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