| Project/Area Number |
16K05957
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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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| Research Field |
Device related chemistry
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| Research Institution | Kanazawa Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 有機EL / 発光効率 / 光学解析 / マイクロキャビティ / 光取りだし / 光取り出し / 有機ＥＬ / エレクトロルミネッセンス / 光学シミュレーション / 表面プラズモン / 電気・電子材料 / シミュレーション解析 / 光学設計 / 電子デバイス・機器 / 電子・電気材料 / 光物性 / マイクロ・ナノデバイス |
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| Outline of Final Research Achievements |
We developed a multi-scale optical analysis method that connects electromagnetic optics and near-field optics in order to realize highly efficient OLED characteristics with high color purity and high directivity and high luminance white light emission characteristics with high color rendering and wide viewing angle characteristics. At the same time, the same method was applied to color organic devices to study improvement in color purity and luminous efficiency. As a result, the full width at half maximum of the emission spectrum of the RGB luminescence was reduced to about 1/2, the chromaticity coordinate of emission was improved, and the light extraction efficiency was improved to a range of 25 to 35%. Moreover, as a result of applying the same method to a white OLED with the combination of multi-cathode and light scattering layer, light extraction efficiency and power efficiency are improved, and color rendering and viewing angle are also improved.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究はマルチカソード構造を利用した高演色性・広視角特性の白色有機ＥＬ、並びに高色純度・高指向性の有機ＥＬディスプレイを実現する光学設計技術の開発であり、電力損失の主因である表面プラズモン効果の低減により高効率を維持したまま、照明装置やディスプレイ装置が要求する発光特性を実現できる。また、本研究で開発したマルチスケール解析手法は有機薄膜デバイスの光学理論および高性能化に向けた構造・材料の探索・設計に新たな学問的知見を与える。同研究成果は有機ＥＬ照明の高輝度化、並びに次世代4K8K-TV用のBT2020規格に適合した色再現範囲の広いカラー有機ＥＬディプレイの開発に寄与する。
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