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1. 吉林师范大学 信息技术学院,吉林 四平,136000
2. 华南理工大学 化学与化工学院,广东 广州,510641
收稿日期:2010-05-06,
修回日期:2010-06-02,
网络出版日期:2011-02-20,
纸质出版日期:2011-02-20
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高永慧, 姜文龙, 丁桂英, 丛林, 孟昭晖, 欧阳新华, 曾和平. 基于NPBX掺杂CzHQZn的黄色有机电致发光器件[J]. 液晶与显示, 2011,26(1): 44-48
GAO Yong-hui, JIANG Wen-long, DING Gui-ying, CONG Lin, MENG Zhao-hui, OUYANG Xin-hua, ZENG He-ping. Yellow Organic Light-Emitting Devices Based on NPBX Doped CzHQZn[J]. , 2011,26(1): 44-48
高永慧, 姜文龙, 丁桂英, 丛林, 孟昭晖, 欧阳新华, 曾和平. 基于NPBX掺杂CzHQZn的黄色有机电致发光器件[J]. 液晶与显示, 2011,26(1): 44-48 DOI: 10.3788/YJYXS20112601.0044.
GAO Yong-hui, JIANG Wen-long, DING Gui-ying, CONG Lin, MENG Zhao-hui, OUYANG Xin-hua, ZENG He-ping. Yellow Organic Light-Emitting Devices Based on NPBX Doped CzHQZn[J]. , 2011,26(1): 44-48 DOI: 10.3788/YJYXS20112601.0044.
利用一种既具有空穴传输特性又具有发光特性的新型荧光染料
N
-乙基咔唑-2-乙烯基-8-羟基喹啉锌 掺杂在NPBX中作为空穴传输层
CzHQZn同时还作为发光的主体
制备了结构为ITO/2T-NATA(30 nm)/NPBX ∶ 25%CzHQZn(
x
nm)/BCP(10 nm)/Alq
3
(60-
x
) nm/ LiF(0.5 nm)/Al的有机发光器件(
x
为掺杂发光层的厚度)
掺杂发光层的厚度按照15
20
25
30 nm进行变化
相应改变Alq
3
的厚度
使得这两者的总厚度为60 nm保持不变。当掺杂发光层的厚度是20 nm
Alq
3
的厚度是40 nm
其他层厚度保持不变时
器件在4 V电压下实现了黄光发射
色坐标为(0.514 6
0.470 5)
亮度是1.078 cd/m
2
。在14 V的电压下
器件最大发光亮度为449 0 cd/m
2
最大发光效率为0.98 cd/A。
The performance of yellow organic light-emitting devices (OLEDs) based on a novel material with an emitting/hole-transporting layer as an acceptor was investigated. These devices were fabricated as follows: ITO/2T-NATA(30 nm)/NPBX ∶ 25% CzHQZn(
x
nm)/BCP(10 nm)/Alq
3
(60-
x
) nm/LiF(0.5 nm)/Al(
x
: the thickness of doping layer). The
x
is 15
20
25
30 nm
respectively
the thickness of Alq
3
is correspondingly changed
the total thickness of doping layer and Alq
3
is a constant of 60 nm.When
x
is 20 nm
the thickness of Alq
3
is 40 nm
a yellow OLED can be obtained with the CIE coordinates of (0.514 6
0.470 5)
the luminance of 1.078 cd/m
2
at 4 V. The maximum luminance is 449 0 cd/m
2
at 14 V
and the maximum luminous efficiency is 0.98 cd/A.
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