Realization of Organic EL Devices without ITO Transparent Electrodes

无需ITO透明电极的有机EL器件的实现

• 批准号: 20613009
• 负责人: HAYASHI Shinji
• 金额: $ 2.83万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20613009/
• 关键词: 有機分子; 蛍光; 表面プラズモン; 金属; 多層膜; 有機EL; ITO; MIM構造; 蛍光増強; Purcell効果

In order to realize organic light emitting devices without transparent ITO electrodes, experimental and theoretical studies were performed. Metal-Insulator-Metal (MIM) structures having an organic light emitting layer at the center of the structures were prepared and their emission properties were measured. An intensity enhancement of ~25 was observed in good agreement with theoretical estimates. The intensity enhancement can be well explained in terms of light emission mediated by symmetric surface plasmon polaritons in the MIM structure. Results of simulations for realistic light emitting devices indicate that the light-extraction efficiency is greatly enhanced when an ITO electrode is replaced by an Ag electrode. The present results suggest that organic light emitting devices with high efficiencies can be constructed without ITO electrodes.

为了实现无透明ITO电极的有机发光器件，进行了实验和理论研究。制备了具有有机发光层的金属-绝缘体-金属（MIM）结构，并对其发射性能进行了测试。观测到的强度增强约25，与理论估计非常吻合。这种强度增强可以很好地解释为MIM结构中对称表面等离子激元极化子介导的光发射。对实际发光器件的仿真结果表明，用银电极代替ITO电极可大大提高光提取效率。目前的研究结果表明，不需要ITO电极就可以构建出高效率的有机发光器件。

项目成果

(今さら聞けない?基礎中の基礎)表面プラズモンとは?

（现在不能问？基础中的基础）什么是表面等离子体？

• 发表时间: 2011
• 期刊: 応用物理 80, 1
• 作者: Y. X. Yu;Y. Hodumi;J. Shi;Y. Nakamura;冨澤宏光;林真至
• 通讯作者: 林真至

Anisotropic propagation of surface plasmon polaritons caused by oridented molecular overlaye

定向分子覆盖引起的表面等离子体激元的各向异性传播

• 发表时间: 2009
• 作者: Dominique P.Huber;Gerald Kehr;Klaus Bergander;Roland Frolich;Gerhard Erker;Soichiro Tanino;Yasuhiro Ohki;Kazuyuki Tatsumi;Fadiah Adlina M.Ghazali
• 通讯作者: Fadiah Adlina M.Ghazali

Mechanism of enhanced light emission from an emitting layer embedded in metal-insulator-metal structures

• DOI: 10.1103/physrevb.82.035441
• 发表时间: 2010-07-28
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Hayashi, Shinji;Maekawa, Akimichi;Fujii, Minoru
• 通讯作者: Fujii, Minoru

Anisotropic propagation of surface plasmon polaritons induced by oriented molecular layers

定向分子层诱导的表面等离子体激元的各向异性传播

• 发表时间: 2010
• 作者: Youhei Takeichi;Minoru Fujii;Shinji Hayashi
• 通讯作者: Shinji Hayashi

Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography

• DOI: 10.1063/1.3159030
• 发表时间: 2009-07-01
• 期刊: JOURNAL OF APPLIED PHYSICS
• 影响因子: 3.2
• 作者: Mochizuki, Yugo;Fujii, Minoru;Akamatsu, Kensuke
• 通讯作者: Akamatsu, Kensuke