Coupled Optical Modeling for Optimization of Organic Light-Emitting Diodes with External Outcoupling Structures,ACS Photonics

当前位置： X-MOL 学术 › ACS Photonics › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Coupled Optical Modeling for Optimization of Organic Light-Emitting Diodes with External Outcoupling Structures
ACS Photonics ( IF 6.5 ) Pub Date : 2017-12-05 00:00:00 , DOI: 10.1021/acsphotonics.7b00874
Milan Kovačič ₁ , Paul-Anton Will ₂ , Benjamin Lipovšek ₁ , Marko Topič ₁ , Simone Lenk ₂ , Sebastian Reineke ₂ , Janez Krč ₁

Affiliation

We present an optical optimization on a red bottom-emitting OLED with an enhanced cavity in combination with external outcoupling textures, periodically positive and negative hexagonal dome-shaped structures. A coupled optical modeling, combining simulations of coherent planar and incoherent structured layers, is verified and employed for optimization of the OLED structure and applied textures. Special attention is paid on the study of optical effects, related to the limited device area. Using optical modeling, we present and quantify main optical losses in the device. We show the importance of considering external outcoupling structures in optimization of thicknesses of organic films, which define the optical cavity. When optimized, an OLED with 50.5% light extraction efficiency (39.4% external quantum efficiency) and improved angular intensity distribution is predicted for devices with positive shaped dome structures. This approach allows for global efficiency optimization of complete OLEDs, comprising arbitrarily shaped outcoupling structures.

中文翻译：

耦合光学模型用于优化具有外部输出耦合结构的有机发光二极管

我们提出了在具有增强型腔的红色底部发射OLED上进行光学优化的方法，该方法与外部输出耦合纹理，周期性的正负六边形圆顶状结构相结合。验证了耦合光学模型，该模型结合了相干的平面层和不相干的结构化层的模拟，并已用于优化OLED结构和所应用的纹理。与有限的器件面积有关的光学效应的研究受到了特别的关注。使用光学建模，我们可以展示和量化设备中的主要光学损耗。我们展示了在优化定义光学腔的有机膜厚度时考虑外部耦合结构的重要性。经过优化后，OLED的光提取效率为50.5％（39。对于具有正形圆顶结构的器件，预计将获得4％的外部量子效率）和改善的角强度分布。这种方法可以对包括任意形状的外耦合结构的完整OLED进行全局效率优化。

更新日期：2017-12-05

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11