The role of magnetic fields on the efficiency of OLED of double quantum well structures

被引：3

作者：

Jiang Wen-Long ^{[1
]}

Meng Zhao-Hui ^{[1
]}

Cong Lin ^{[1
]}

Wang Jin ^{[1
]}

Wang Li-Zhong ^{[1
]}

Han Qiang ^{[1
]}

Meng Fan-Chao ^{[1
]}

Gao Yong-Hui ^{[1
]}

机构：

[1] Jilin Normal Univ, Coll Informat & Technol, Siping 136000, Peoples R China

来源：

ACTA PHYSICA SINICA | 2010年 / 59卷 / 09期

基金：

中国国家自然科学基金;

关键词：

quantum well; magnetic field; OLED; magnetic field effects; MAGNETORESISTANCE;

D O I：

10.7498/aps.59.6642

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The organic light emitting diodes with the structure of ITO/NPB (60 nm)/ Alq(3): Rubrene(1wt%,20 nm)/Alq(3) (3 nm)/Alq(3) :Rubrene(1 wt%,20 nm) / Alq(3)(20 nm)/LiF/Al, which have multiple quantum well structures (MQW), were fabricated and the magnetic field effects on the efficiency and current of the OLEDs were measured. The experiment showed that the current decreased monotoniocally, i. e. the resistance of the device increased under the magnetic field. At the same time, the magnetic field effect on efficiency was achieved. The changing ratio of efficiency increased 9. 13% maximally when the magnetic field was below 20 mT. The changing ratio of efficiency decreased with the magnetic field increasing when the magnetic field was higher than 20 mT.

引用

页码：6642 / 6646

页数：5

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