Study of blue organic light emitting diode by inserting a red dye ultra thin layer at the emitting layer

被引：11

作者：

Jiang, XY ^{[1
]}

Zhang, ZL ^{[1
]}

Zhu, WQ ^{[1
]}

Xu, SH ^{[1
]}

机构：

[1] Shanghai Univ, Dept Mat Sci, Shanghai 201800, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2005年 / 38卷 / 23期

关键词：

D O I：

10.1088/0022-3727/38/23/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Experiments of inserting an ultra thin layer of DCJTB at three different levels in a blue emitter layer of a blue device, ITO/CuPc/NPB/TBADN/Alq/LiF/Al, were carried out. The spectra of these devices indicate that the recombination zone is chiefly located near the NPB/TBADN interface, implying that TBADN is capable of electron transport. The inserted DCJTB at TBADN/Alq interface has no contribution to emission, leaving only the blue emission from TBADN, even at high voltage. However, it improved the stability of the device; the half lifetime was prolonged twice more and the rise of applied voltage during ageing was suppressed from 3 V to 0.4 V.

引用

页码：4153 / 4156

页数：4

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