High efficiency and non-color-changing orange organic light emitting diodes with red and green emitting layers

被引：30

作者：

Lee, Sunghun ^{[1
,2
]}

Limbach, Daniel ^{[3
]}

Kim, Kwon-Hyeon ^{[1
,2
]}

Yoo, Seung-Jun ^{[1
,2
]}

Park, Young-Seo ^{[4
,5
]}

Kim, Jang-Joo ^{[1
,2
,4
,5
]}

机构：

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

[2] Seoul Natl Univ, Ctr Organ Light Emitting Diode, Seoul 151744, South Korea

[3] Johannes Gutenberg Univ Mainz, Fac Chem 09, D-55128 Mainz, Germany

[4] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

[5] Seoul Natl Univ, Ctr Organ Light Emitting Diode, Seoul 151742, South Korea

来源：

ORGANIC ELECTRONICS | 2013年 / 14卷 / 07期

关键词：

Orange organic light emitting diode; Exciplex forming host; Red and green dopants; Two emitting layers; DERIVATIVES;

D O I：

10.1016/j.orgel.2013.04.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a high performance orange organic light-emitting diode (OLED) where red and green phosphorescent dyes are doped in an exciplex forming co-host as separate red and green emitting layers (EMLs). The OLED shows a maximum external quantum efficiency (EQE) of 22.8%, a low roll-off of efficiency with an EQE of 19.6% at 10,000 cd/m(2), and good orange color with a CIE coordinate of (0.442, 0.529) and no color change from 1000 to 10,000 cd/m(2). The exciplex forming co-host system distributes the recombination zone all over the EMLs and reduces the triplet exciton quenching processes. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：1856 / 1860

页数：5

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