Metal-organic-metal cathode for high-contrast organic light-emitting diodes

被引：51

作者：

Feng, XD ^{[1
]}

Khangura, R ^{[1
]}

Lu, ZH ^{[1
]}

机构：

[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 03期

关键词：

D O I：

10.1063/1.1745106

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Organic light-emitting diodes have been fabricated using a stacked metal-organic-metal cathode structure. The first metal layer is embedded approximately between an emission layer and an electron transport layer serving as a floating electron injection electrode. The second metal layer is a terminal layer serving as a contacting electrode. The optical transmission of the embedded electrode and the optical path between the two electrodes were used together to maximize destructive optical interference, thus rendering the cathode nonreflective. These devices also showed excellent diode characteristics; for example, a luminance of 100 cd/m(2) at similar to3 V. Optical reflectance in the visible spectrum for the diodes was found to be reduced from similar to80% on conventional devices to similar to20% on devices with the metal-organic-metal cathode. (C) 2004 American Institute of Physics.

引用

页码：497 / 499

页数：3

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