Efficient organic light-emitting diodes fabricated on cellulose nanocrystal substrates

被引：39

作者：

Najafabadi, E. ^{[1
]}

Zhou, Y. H. ^{[1
]}

Knauer, K. A. ^{[1
]}

Fuentes-Hernandez, C. ^{[1
]}

Kippelen, B. ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 06期

关键词：

TRANSPARENT; NANOCOMPOSITE;

D O I：

10.1063/1.4891046

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Organic light-emitting diodes (OLEDs) fabricated on recyclable and biodegradable substrates are a step towards the realization of a sustainable OLED technology. We report on efficient OLEDs with an inverted top-emitting architecture on recyclable cellulose nanocrystal (CNC) substrates. The OLEDs have a bottom cathode of Al/LiF deposited on a 400 nm thick N, N'-Di-[(1-naphthyl)-N, N'-diphenyl]-(1,1'-biphenyl)-4,4'-diamine (alpha-NPD) layer and a top anode of Au/MoO3. They achieve a maximum luminance of 74 591 cd/m(2) with a current efficacy of 53.7 cd/A at a luminance of 100 cd/m(2) and 41.7 cd/A at 1000 cd/m(2). It is shown that the alpha-NPD layer on the CNC substrate is necessary for achieving high performance OLEDs. The electroluminescent spectra of the OLEDs as a function of viewing angle are presented and show that the OLED spectra are subject to microcavity effects. (c) 2014 AIP Publishing LLC.

引用

页数：4

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