2015 Fiscal Year Final Research Report
Highly efficiency Organic Light Emitting Devices by the surpressed Surface Plasmon Loss and its application for Flexible Light Sources
| Project/Area Number |
25410252
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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) |
2013-04-01 – 2016-03-31
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| Keywords | 有機EL / 照明装置 / 電機・電子材料 / シュミレーション工学 |
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| Outline of Final Research Achievements |
The objective of this research activity is the reduction of a surface plasmon loss and the improvement of optical extraction efficiency which occupy approximately a half of optical losses in the organic light emitting devices. For this reason, I developed the optical method which connects seamlessly the surface plasmon resonance in the metal electrode with the optical propagation in an organic thin film by employing original multi-scale analysis. Moreover, the refractive index controlled substrate was used in the organic EL device together with the multi-cathode structure. Research results showed that external quantum efficiency was improvable two or three times compared with conventional EL structure. These results suggest the importance and possibility of optical design technique towards an improvement in luminous efficiency. It will be possible of the white organic EL device exceeding 50% of external quantum efficiency.
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| Free Research Field |
電子工学
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