Multi-color microfluidic organic light-emitting diodes based on on-demand emitting layers of pyrene-based liquid organic semiconductors with fluorescent guest dopants

被引：50

作者：

Kasahara, Takashi ^{[1
]}

Matsunami, Shigeyuki ^{[2
]}

Edura, Tomohiko ^{[2
]}

Ishimatsu, Ryoichi ^{[3
]}

Oshima, Juro ^{[2
,4
]}

Tsuwaki, Miho ^{[1
]}

Imato, Toshihiko ^{[3
]}

Shoji, Shuichi ^{[1
]}

Adachi, Chihaya ^{[2
]}

Mizuno, Jun ^{[5
]}

机构：

[1] Waseda Univ, Dept Nanosci & Nanoengn, Shinjuku Ku, Tokyo 1698555, Japan

[2] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Nishi Ku, Fukuoka 8190395, Japan

[3] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Nishi Ku, Fukuoka 8190395, Japan

[4] Nissan Chem Ind Co Ltd, Mat Res Labs, Frontier Mat Res Dept, Funabashi, Chiba 2740052, Japan

[5] Waseda Univ, Inst Nanosci & Nanotechnol, Shinjuku Ku, Tokyo 1620041, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2015年 / 207卷

关键词：

Microfluidic OLEDs; Liquid OLEDs; Liquid organic semiconductor; Electro-microfluidic; Energy transfer; Liquid host; FABRICATION; DEVICES; CELL;

D O I：

10.1016/j.snb.2014.09.101

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study, we propose on-demand multi-color microfluidic organic light-emitting diodes (microfluidic OLEDs) using fluorescent guest emitter-doped liquid organic semiconductors. We use 1-pyrenebutyric acid 2-ethylhexyl ester (PLQ) not only for a greenish-blue liquid emitter, but also for a liquid host. 5,12-Diphenyltetracene (DPT), 5,6,11,12-tetraphenyltetracene (rubrene), and tetraphenyldibenzoperiflanthene (DBP) are doped into PLQ to obtain green, yellow, and red liquid emitters, respectively. Single-micrometer-thick SU-8-based microchannels sandwiched between an indium tin oxide (ITO) anode and a 3-aminopropyltriethoxysilane (APTES)-modified ITO cathode are fabricated on a glass substrate using photolithography and heterogeneous bonding techniques, and emitting layers are formed on-demand by simply injecting liquid emitters into the target microchannels. The microfluidic OLEDs with liquid emitters successfully exhibited multi-color electroluminescence (EL) emissions. Furthermore, the maximum luminance reached 26.0 cd/m(2) at 61 V for 2.5-mu m-thick microfluidic OLED with PLQ, and the decreased EL luminance was recovered by replacing the degraded emitting layer with a fresh liquid emitter. We expect that on-demand multi-color EL emissions and refreshable luminance features of the proposed microfluidic OLEDs will be highly promising technologies for future long-life light-emitting device applications. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：481 / 489

页数：9

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