用于最大化有机发光二极管（OLED）出光效率的负介电常数三金属层电极的最佳厚度

Optimum thickness of epsilon negative tri-metal layer electrodes for maximizing OLED outcoupling efficiency.

作者信息

Hoang The Viet, Lee Song Eun, Lee Jae-Gon, Kim Young Kwan, Lee Jeong-Hae

出版信息

Opt Express. 2017 Dec 11;25(25):31006-31016. doi: 10.1364/OE.25.031006.

DOI:10.1364/OE.25.031006

Abstract

A transparent electrode is an essential component that has a strong influence on the extraction of light from organic light-emitting diodes (OLEDs) due to its effect on both electrical and optical performance. In this work, we present theoretical studies, full wave simulations, and experimental results to evaluate the influence of the thickness of epsilon negative tri-metal layer (TML) electrodes on the performance of red phosphorescent OLEDs (PHOLEDs) via an optical microcavity effect. The results show that the external quantum efficiency of the optimized TML-based red PHOLED of 17.6% is significantly improved, and it is approximately 40% higher than that of the conventional indium tin oxide (ITO)-based red PHOLED of 12.5%.

摘要

透明电极是一种重要组件，因其对电学和光学性能均有影响，所以对有机发光二极管（OLED）的光提取有很大影响。在本工作中，我们通过光学微腔效应，给出了理论研究、全波模拟和实验结果，以评估ε负三金属层（TML）电极厚度对红色磷光OLED（PHOLED）性能的影响。结果表明，优化后的基于TML的红色PHOLED的外量子效率显著提高，达到17.6%，比传统基于氧化铟锡（ITO）的红色PHOLED的12.5%高出约40%。