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High-efficiency Blue Phosphorescent OLEDs Based on Mixed-host Structure by Solution-processed Method
增强出版- 发光学报 Vol. 43, Issue 5, Pages: 763-772(2022)
- 作者机构：
1.中国科学院长春应用化学研究所 稀土资源利用国家重点实验室, 吉林 长春 130022
2.东北师范大学 先进光电子功能材料研究中心，紫外光发射材料与技术教育部重点实验室, 吉林 长春 130024
- 作者简介：
[ "王哲(1997-)，女，辽宁鞍山人，硕士研究生，2019年于辽宁师范大学获得学士学位，主要从事有机电致发光二极管制备的研究。E-mail: 619211510@qq.com" ]
[ "刘华(1976-)，女，吉林长春人，博士，教授，博士生导师，2006年于中国科学院长春光学精密机械与物理研究所获得博士学位，主要从事衍射光学、非成像光学以及光学设计等领域的研究。E-mail: liuh146@nenu.edu.cn" ]
[ "周亮(1982-)，男，江苏徐州人，博士，研究员，博士生导师，2011年于中国科学院长春应用化学研究所获得博士学位，主要从事有机发光二极管工作机理、有机光电子材料及器件设计、器件制备工艺优化及制备装备的研究。E-mail: zhoul@ciac.ac.cn" ]
- 基金信息：国家自然科学基金(62174160);中国科学院科研设备开发项目(YJKYYQ20200005)
DOI：10.37188/CJL.20220049
CLC： TN383+.1Published：2022-05，
Received：16 February 2022，
Revised：04 March 2022，
扫 描 看 全 文
Zhe WANG, Rui-xia WU, Yang FENG, et al. High-efficiency Blue Phosphorescent OLEDs Based on Mixed-host Structure by Solution-processed Method. [J]. 发光学报 43(5):763-772(2022)
Zhe WANG, Rui-xia WU, Yang FENG, et al. High-efficiency Blue Phosphorescent OLEDs Based on Mixed-host Structure by Solution-processed Method. [J]. 发光学报 43(5):763-772(2022) DOI： 10.37188/CJL.20220049.
摘要
为了提高蓝色有机发光二极管的效率，本文借助溶液法采用TcTa和CzSi混合主体，制备了蓝色磷光有机发光二极管（PHOLEDs）。此外，针对三种电子传输材料Tm3PyP26PyB、TmPyPB和TPBi进行了优选，以进一步优化器件的效率。本文通过优化混合主体材料的掺杂比例和电子传输材料的选择，不断提高器件的效率。最终，当TcTa∶CzSi的掺杂比为6∶1、电子传输层TPBi为70 nm时器件性能最优，其最大亮度（
B
max
）、电流效率（CE
max
）、功率效率（PE
max
）和外量子效率（EQE
max
）分别为6 662 cd·m
-2
、39.40 cd·A
-1
、23.33 lm·W
-1
和19.7%。此外，即使在1 000 cd·m
-2
的实际亮度下，电流效率和外量子效率仍高达33.43 cd·A
-1
和16.7%。
Abstract
Blue phosphorescent organic light-emitting diodes(PHOLEDs) which utilized TcTa and CzSi as the mixed-host were fabricated to improve the efficiency by solution-processed method. Additionally
three electron transport materials Tm3PyP26PyB
TmPyPB and TPBi were employed to further enhance the efficiency of devices. The efficiency was improved by optimizing the ratio of host materials and the selection of electron transport material. Finally
the optimal device with the doping ratio TcTa∶CzSi of 6∶1 and 70 nm TPBi layer exhibited the maximum brightness(
B
max
)
current efficiency(CE
max
)
power efficiency(PE
max
) and external quantum efficiency(EQE
max
) of 6 662 cd·m
-2
39.40 cd·A
-1
23.33 lm·W
-1
and 19.7%
respectively. Moreover
outstanding current efficiency and external quantum efficiency as high as 33.43 cd·A
-1
and 16.7%
respectively
were obtained
even at the practical brightness of 1 000 cd·m
-2
.
关键词
有机发光二极管高效溶液法混合主体结构蓝光
Keywords
organic light-emitting diodeshigh efficiencysolution-processedmixed-host structureblue emission
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