Effect of ITO-free Ni/Ag/Ni electrode on flexible blue phosphorescent organic light-emitting diodes

Author

Ho Won Lee ; Song Eun Lee ; Jae Woo Lee ; Yong Sun ; Hyung Jin Yang ; Sungkyu Lee ; Han Kyu Yoo ; Kyo Min Hwang ; Jaehoon Park ; Young Kwan Kim

Author_Institution

Dept. of Inf. Display, Hongik Univ., Seoul, South Korea

fYear

2014

fDate

2-4 July 2014

Firstpage

261

Lastpage

262

Abstract

In this work, we proposed that indium-tin-oxide (ITO)-free, which is the most generally used to a transparent electrode for light applications and displays, semitransparent Ni/Ag/Ni electrode could be applied in flexible blue phosphorescent organic light-emitting diodes (OLEDs). Although the highest electrical characteristics values, such as luminance efficiency and external quantum efficiency, using ITO electrode were better than that of devices using Ni/Ag/Ni electrodes, roll-off efficiency and device stability were suitable for blue OLEDs. Therefore, this study could be suggested to additional flexible OLEDs and light applications for ITO-free process.

Keywords

brightness; electrodes; integrated optoelectronics; nickel; organic light emitting diodes; phosphorescence; silver; ITO-free Ni-Ag-Ni electrode; Ni-Ag-Ni; OLED; device stability; electrical characteristics; external quantum efficiency; flexible blue phosphorescent organic light-emitting diodes; luminance efficiency; roll-off efficiency; semitransparent electrode; transparent electrode; Electrodes; Glass; Indium tin oxide; Nickel; Organic light emitting diodes; Positron emission tomography; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Active-Matrix Flatpanel Displays and Devices (AM-FPD), 2014 21st International Workshop on

Conference_Location

Kyoto

Type

conf

DOI

10.1109/AM-FPD.2014.6867188

Filename

6867188