Outcoupling efficiency of organic light emitting diodes and the effect of ITO thickness

被引：101

作者：

Kim, Sei-Yong

Kim, Jang-Joo ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

来源：

ORGANIC ELECTRONICS | 2010年 / 11卷 / 06期

关键词：

Outcoupling efficiency; Organic light emitting diodes; SPECTROSCOPIC ELLIPSOMETRY; EXTRACTION EFFICIENCY; EMISSION; FLUORESCENCE; TRANSPORT; DEVICES;

D O I：

10.1016/j.orgel.2010.03.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Outcoupling efficiency of bottom emission organic light emitting diodes (OLEDs) have been analyzed using a model (Adv. Chem. Phys. 37 (1987) 1, [17]) based on classical electromagnetic theory with a full vectorial approach. The analyses presented in this study take into account many factors, including the thickness of the ITO layer. Maximum outcoupling efficiencies over 27% and 30% are achievable if thin ITO layers in the range of 50-70 nm and 50-100 nm are used for blue and green phosphorescent OLEDs, respectively. Even higher efficiencies of 29% for the blue and 31.6% for the green OLED can be obtained if we use thicker organic layers supporting two antinodes suggesting that phosphorescent OLEDs can have a much higher external quantum efficiency than 20%. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1010 / 1015

页数：6

共 34 条

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