Fuzzy-junction organic light-emitting devices

被引：23

作者：

Chen, CW

Cho, TY

Wu, CC ^{[1
]}

Yu, HL

Luh, TY

机构：

[1] Natl Taiwan Univ, Grad Inst Electroopt Engn, Dept Elect Engn, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 09期

关键词：

D O I：

10.1063/1.1502912

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A "fuzzy-junction" organic light-emitting device (OLED) containing a graded organic-organic interface is reported. Such graded junction is effectively produced utilizing interdiffusion through an ultrathin interfacial fusing layer sandwiched between two functional layers. With a glass transition temperature (T-g) lower than remaining layers, this fusing layer permits smooth interdiffusion and mixing of neighboring layers by annealing above its T-g. With appropriate material combinations, fuzzy-junction OLEDs thus prepared exhibit both reduced voltage and enhanced emission efficiency in comparison with conventional abrupt-junction devices. As an instance, a green fluorescent OLED with such fuzzy junction shows a high peak power efficiency of similar to20 lm/W, substantially higher than similar to14 lm/W of a corresponding abrupt-junction device. (C) 2002 American Institute of Physics.

引用

页码：1570 / 1572

页数：3

共 13 条

[1] Degradation mechanism of small molecule-based organic light-emitting devices [J].