Stacked inverted top-emitting green electrophosphorescent organic light-emitting diodes on glass and flexible glass substrates

被引：38

作者：

Knauer, Keith A. ^{[1
]}

Najafabadi, Ehsan ^{[1
]}

Haske, Wojciech ^{[1
]}

Gaj, Michael P. ^{[1
]}

Davis, Kendall C. ^{[1
]}

Fuentes-Hernandez, Canek ^{[1
]}

Carrasco, Ulises ^{[1
]}

Kippelen, Bernard ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Elect & Comp Engn, Ctr Organ Photon & Elect, Atlanta, GA 30332 USA

来源：

ORGANIC ELECTRONICS | 2013年 / 14卷 / 10期

基金：

美国国家科学基金会;

关键词：

Stacked; Inverted; Organic light-emitting diode; Flexible glass; Green; Electrophosphorescent; HIGH-EFFICIENCY; DEVICES; LAYER; ANODES;

D O I：

10.1016/j.orgel.2013.06.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stacked inverted top-emitting green electrophosphorescent organic light-emitting diodes (OLEDs) are demonstrated on glass and flexible glass substrates. A single-unit OLED is shown to have a current efficacy of 46.8 cd/A at a luminance of 1215 cd/m(2). When two of these OLEDs are stacked, the double-unit OLED exhibits a current efficacy more than twice that of the single-unit OLED, with a current efficacy of 97.8 cd/A at a luminance of 1119 cd/m(2). With the addition of an optical outcoupling layer of N,N'-Di-[(1-naphthyl)-N,N'-diphenyl]-1,1'-biphenyl)-4,4'-diamine (alpha-NPD) on top of the semitransparent gold anode, the double-unit stacked OLED achieves a maximum current efficacy of 205 cd/A at a luminance of 103 cd/m(2), maintaining a high current efficacy of 200 cd/A at a luminance of 1011 cd/m(2). These stacked inverted OLED combine the advantages of inverted OLEDs with the benefits of having a stacked architecture. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：2418 / 2423

页数：6

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