Film properties and polycrystallization of organic dyes on ITOs with surface treatment for organic light-emitting diodes

被引：5

作者：

Iwama, Yuki ^{[1
]}

Mori, Tatsuo ^{[1
]}

Mizutani, Teruyoshi ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi, Japan

来源：

ELECTRICAL ENGINEERING IN JAPAN | 2006年 / 156卷 / 04期

关键词：

organic light-emitting diode; indium tin oxide; surface treatment; contact angle; polycrystallization;

D O I：

10.1002/eej.20379

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

ITO (indium tin oxide) has now been widely used as the transparent anode for organic light-emitting devices (OLEDs). We used various methods of ITO surface treatment and examined their effects by measuring contact angle and calculating surface energy. We also prepared OLEDs with ITO treated by each method, and estimated their characteristics. The surface of ITO treated by UV-O-3 or O-2-plasma was more hydrophilic than that treated by only organic rinse or no treatment, and consequently the characteristic of the OLED was improved. We suppose these treatments affect the hole injection from ITO into the organic layer, due to ionization potential or surface cleanness. We also investigated the time degradation of NPD films on the ITO substrates. The films deposited with a high deposition rate polycrystallized faster. (C) 2006 Wiley Periodicals, Inc.

引用

页码：1 / 8

页数：8

共 9 条

[1] Effect of fabrication conditions on photoluminescence and absorption of hole transport materials [J].