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.

为了实现无需透明ITO电极的有机发光器件，进行了实验和理论研究。制备在结构中心具有有机发光层的金属-绝缘体-金属(MIM)结构并测量它们的发射特性。观察到约 25 的强度增强，与理论估计非常一致。强度增强可以用 MIM 结构中对称表面等离子体激元介导的光发射来很好地解释。对实际发光器件的模拟结果表明，当ITO电极被Ag电极替代时，光提取效率大大提高。目前的结果表明，无需 ITO 电极即可构建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

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

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

金属/誘電体/金属構造の輻射的表面プラズモンと発光増強

金属/电介质/金属结构的辐射表面等离子体和发光增强

• 发表时间: 2009
• 作者: Yasuhiro Ohki;Yuko Takikawa;Hitomi Sadohara;Christian Kesenheimer;Barthel Engendahl;Elissavet Kapatsina;Kazuyuki Tatsumi;徳田陽明・西岡聡史・正井博和・上田義勝・古屋仲秀樹・横尾俊信・高橋雅英;林真至
• 通讯作者: 林真至

Enhanced light emission from an organic emitting layer embedded in metal-insulator-metal structures

嵌入金属-绝缘体-金属结构中的有机发光层增强发光

• 发表时间: 2010
• 作者: Suk Chan Kim;Minoru Fujii;Shinji Hayashi
• 通讯作者: Shinji Hayashi