Bipolar Fluorenylcarbazole-based Host Materials for Efficient Red Phosphorescent Organic Light-emitting Diodes

Qian-kun LING; Bi-zheng DONG; Zhi-kuan CHEN; Hua WANG; Ting-wei WEI; Xiang-zhi LI; Bo ZHAO; Tian-bao LI; Fei CHEN

doi:10.37188/CJL.20210397

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Bipolar Fluorenylcarbazole-based Host Materials for Efficient Red Phosphorescent Organic Light-emitting Diodes

Synthesis and Properties of Materials | 更新时间：2022-04-07

- Bipolar Fluorenylcarbazole-based Host Materials for Efficient Red Phosphorescent Organic Light-emitting Diodes
  增强出版
- 发光学报 Vol. 43, Issue 3, Pages: 359-370(2022)
- 作者机构：
  
  1.太原理工大学　新材料界面科学与工程教育部重点实验室，山西　太原　030024
  2.西北工业大学　宁波研究院，浙江　宁波　315199
  3.宁波诺丁汉大学　化学环境工程系，浙江　宁波　315199
- 作者简介：
  
  [ "凌乾坤(1994 -)，男，河南商丘人，硕士研究生，2019年于河南工程学院获得学士学位，主要从事应用于有机发光二极管的红光磷光双极性主体材料的研究。E-mail: 1192142380@qq.com" ]
  [ "陈志宽(1967-)，男，四川绵阳人，博士，教授，博士生导师，1995年于北京大学获得博士学位，主要从事有机光电材料的设计与合成、材料光电特性及薄膜特性、材料的器件特性及其与材料结构的构效关系及器件制程、器件物理、器件集成等方面的研究。E-mail: zkchen@lumilan.cn" ]
  [ "王华(1977-)，男，山西平定县人，博士，教授，博士生导师，2007年于太原理工大学获得博士学位，主要从事有机半导体光电材料与器件的研究。E-mail: wanghua001@tyut.edu.cn" ]
  [ "李天保(1974-)，男，山西临县人，博士，教授，博士生导师，2008年于太原理工大学获得博士学位，主要从事光电半导体器件及制备工艺的研究。E-mail: litianbao@tyut.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(62074109;21875106)
- DOI：10.37188/CJL.20210397
  CLC： O482.31
- Published：2022-03，
  
  Received：16 December 2021，
  
  Revised：07 January 2022，
- 稿件说明：
移动端阅览
QIAN-KUN LING, BI-ZHENG DONG, ZHI-KUAN CHEN, et al. Bipolar Fluorenylcarbazole-based Host Materials for Efficient Red Phosphorescent Organic Light-emitting Diodes. [J]. 发光学报, 2022, 43(3): 359-370.
DOI：

QIAN-KUN LING, BI-ZHENG DONG, ZHI-KUAN CHEN, et al. Bipolar Fluorenylcarbazole-based Host Materials for Efficient Red Phosphorescent Organic Light-emitting Diodes. [J]. 发光学报, 2022, 43(3): 359-370. DOI： 10.37188/CJL.20210397.

摘要

为提高有机发光二极管的发光效率，设计合成了两种新的红光磷光双极性主体材料FC-CZ-PQZ和FC-BCz-PQZ，两种材料均表现出优秀的光物理性能、较高热稳定能力和平衡的载流子传输能力，FC-BCz-PQZ表现最佳，与FC-Cz-PQZ相比，FC-BCz-PQZ的热稳定能力更强、载流子传输平衡性更好. 以FC-CZ-PQZ和FC-BCz-PQZ为主体，制备了红色PhOLEDs

FC-BCz-PQZ表现出了较高的电致发光性能，电流效率、功率效率和最大外量子效率分别为13.5 cd/A、14.2 lm/W 和 14.8%

说明FC-BCz-PQZ有潜力成为红光PhOLED主体材料.

Abstract

Achieving high-efficiency red phosphorescent organic light-emitting diodes(PhOLEDs) is still a challenge

which is largely related to the host material used in device fabrication. Two new bipolar hosts

2-(9

-carbazol-9-yl)-7

7-dimethyl-5-(4-phenylquinazolin-2-yl)-5

7-dihydroindeno［2

1-b］carbazole(FC-CZ-PQZ) and 2-(4-(9

-carbazol-9-yl)phenyl)-7

7-dimethyl-5-(4-phenylquinazolin-2-yl)-5

7-dihydroindeno［2

1-b］carbazole(FC-BCz-PQZ)

were designed and synthesised as host materials to fabricate red PhOLEDs. The two compounds exhibited excellent physical properties with high thermal stabilities and balanced charge transport. FC-BCz-PQZ has a better bipolar carrier transport compared to FC-CZ-PQZ. FC-BCz-PQZ-based device demonstrated good electroluminescence performance with the maximum current efficiency

power efficiency and external quantum efficiency of 13.5 cd/A

14.2 lm/W and 14.8%

respectively

suggesting its promising application as a host material for red PhOLEDs.

关键词

芴基咔唑喹唑啉红光PhOLEDs双极性主体

Keywords

fluorenylcarbazolequinazolinered PhOLEDsbipolar hosts

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Related Institution

aKey Laboratory of Interface Science and Engineering in Advanced Materials， Ministry of Education， Taiyuan University of Technology

bNingbo Research Institute of Northwestern Polytechnical University

cDepartment of Chemical and Environmental Engineering， The University of Nottingham Ningbo China

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