发光层掺杂蓝色OLED的光电性能研究

被引：5

作者：

钟建

陈文彬

杨刚

蒋泉

张磊

王军

林慧

机构：

[1] 电子科技大学光电信息学院

来源：

光电子激光. | 2007年 / 04期

关键词：

有机电致发光器件(OLED); 多层结构; 真空热蒸镀; 掺杂;

D O I：

10.16136/j.joel.2007.04.014

中图分类号：

TN383.1 [];

学科分类号：

摘要：

采用真空热蒸镀技术,在不同的掺杂浓度下,制备了4种双异质型结构的蓝色有机电致发光器件(OLED),其结构为ITO/CuPc(30 nm)/NPB(40 nm)/TPBi(30 nm):GDI691(x%)/Alq3(20 nm)/LiF(1 nm)/Al(50 nm),其中x%为发光层掺杂浓度,分别取1、2、3和4%。从实验结果分析可知:蓝色OLED的电流-电压(I-V)特性曲线、亮度-电压(L-V)曲线、亮度-电流(L-I)曲线及效率等光电性能随着发光层掺杂浓度的变化而改变。当驱动电压为15 V、掺杂浓度为3%时,器件可获得最大亮度6 100 cd.m-2,色坐标CIE为x=0.147、y=0.215,最大流明效率为1.221 m.W-1,电致发光(EL)发光光谱的峰值为468 nm。

引用

页码：432 / 435

页数：4

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