The effect of interfacial layer on the performance of organic light-emitting diodes

被引：141

作者：

Choulis, SA ^{[1
]}

Choong, VE ^{[1
]}

Mathai, MK ^{[1
]}

So, F ^{[1
]}

机构：

[1] Osram Opto Semicond Inc, San Jose, CA 95134 USA

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 11期

关键词：

D O I：

10.1063/1.2042635

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate high efficiency organic light-emitting devices by incorporation of a nanoscale interfacial layer between a hole-conducting layer (PEDOT:PSS) and a light-emitting polymer layer (LEP) to improve hole injection. The interfacial layer has appropriate highest occupied molecular orbital level in order to act as a bridge for efficient hole injection from the PEDOT:PSS into the LEP. As an example we have incorporated a suitable interfacial layer into a green-emitting single-layer electrophosphorescent light-emitting diode. Devices with the interfacial layer show a peak efficiency of 41 lm/W, an improvement of more than 25% in their performance over comparable devices without the interfacial layer. The results presented here introduce a novel method to improve hole injection and thus efficiency in organic electroluminescent devices.

引用

页数：3

共 15 条

[1] Highly efficient phosphorescent emission from organic electroluminescent devices [J].