2012 Fiscal Year Final Research Report
Color control for organic LED assisted by local plasmon resonance effect
| Project/Area Number |
23656018
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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 |
Applied materials science/Crystal engineering
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| Research Institution | Osaka University |
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Principal Investigator |
KUWAHARA Yuji 大阪大学, 大学院・工学研究科, 教授 (00283721)
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| Co-Investigator(Kenkyū-buntansha) |
AKAI Megumi 大阪大学, 大学院・工学研究科, 助教 (50437373)
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| Project Period (FY) |
2011 – 2012
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| Keywords | プラズモン増強効果 |
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| Research Abstract |
A significant increase in the quantum efficiency of an organic red- and blue-light-emitting diode was achieved through coupling with localized surface plasmons of Au nanorods and nanospheres, respectively, embedded on the substrate anode. We used Alq3 as an emission layer. The fabricated diode structure consists of an indium tin oxide (ITO) anode, a Cu phthalocyanine (CuPc) hole transport layer, an Alq3 electron transport layer, a LiF electron injection layer, and an Al cathode. We observed at most a 20-fold increase in the intensity of molecular fluorescence compared with that of a conventional diode structure.
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