调控空穴传输层的分子取向提高有机发光二极管性能

崔东岳; 王帅; 李淑红; 刘云龙; 王文军

doi:10.37188/CJL.20210046

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调控空穴传输层的分子取向提高有机发光二极管性能

器件制备及器件物理 | 更新时间：2021-05-20

- 调控空穴传输层的分子取向提高有机发光二极管性能
- Improving Performance of Organic Light-emitting Diodes by Tuning Molecular Orientation in Hole Transport Layer
- 发光学报 2021年42卷第5期页码：691-699
- 作者机构：
  
  1.聊城大学　物理科学与信息工程学院，山东　聊城　 252059
  2.山东省光通信科学与技术重点实验室，山东　聊城　 252059
- 作者简介：
  
  [ "崔东岳(1993-)，男，河北唐山人，硕士研究生,2017年于河北科技大学获得学士学位，主要从事光电子器件方面的研究。E-mail: c3096815938@163.com" ]
  [ "李淑红(1974-)，女，山东聊城人，博士，副教授，硕士研究生导师,2011年于中国科学院上海光学精密机械研究所获得博士学位，主要从事光学薄膜、有机光电子材料与器件等方面的研究。E-mail: lishuhong@lcu.edu.cn" ]
  [ "王文军(1962-)，男，山东烟台人，博士，教授，博士研究生导师,2001年于复旦大学获得博士学位，主要从事有机光电子材料与器件/激光技术及非线性光学等方面的研究。E-mail: phywwang@163.com" ]
- 基金信息：
  
  国家自然科学基金(61775089);山东省自然科学基金(ZR2017BF009);聊城大学项目(318011904;318051650)
- DOI：10.37188/CJL.20210046
  中图分类号：
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崔东岳, 王帅, 李淑红, 等. 调控空穴传输层的分子取向提高有机发光二极管性能[J]. 发光学报, 2021,42(5):691-699.

Dong-yue CUI, Shuai WANG, Shu-hong LI, et al. Improving Performance of Organic Light-emitting Diodes by Tuning Molecular Orientation in Hole Transport Layer[J]. Chinese Journal of Luminescence, 2021,42(5):691-699.
崔东岳, 王帅, 李淑红, 等. 调控空穴传输层的分子取向提高有机发光二极管性能[J]. 发光学报, 2021,42(5):691-699. DOI： 10.37188/CJL.20210046.

Dong-yue CUI, Shuai WANG, Shu-hong LI, et al. Improving Performance of Organic Light-emitting Diodes by Tuning Molecular Orientation in Hole Transport Layer[J]. Chinese Journal of Luminescence, 2021,42(5):691-699. DOI： 10.37188/CJL.20210046.

摘要

有机发光二极管(OLED)器件性能的提高一直是有机电致发光领域备受关注的研究课题之一，通过优化OLED器件中的载流子平衡是提高OLED器件性能的一个非常重要的手段。但是，调控空穴传输层或电子传输层中的分子取向，从而优化器件中的载流子平衡未被关注。本文通过对空穴传输层进行不同温度的退火处理来改变空穴传输层中的分子取向，研究分子取向对其空穴迁移率和OLED器件性能的影响。研究发现，退火温度的升高使得空穴传输层中具有垂直取向的分子的比例增加，促进了空穴迁移率的提高。当把具有不同分子取向的空穴传输层应用于OLED器件时，可以清楚地观察到载流子平衡因子对器件性能的影响。

Abstract

The performance improvement of organic light-emitting diodes(OLED) devices has always been one of the research topics in the field of organic electroluminescence. Optimization of carrier balance in OLED devices is a critical method to improve the performance of OLED devices. However, it is often neglected to optimize the carrier balance in the OLEDs by tuning the molecular orientation in the hole transport layer or electron transport layer. In this paper, the molecular orientation in the hole transport layer was altered by heat annealing at different temperatures to study the influence of molecular orientation on the hole mobility and the performance of OLED device. It showed that the proportion of molecules with vertical orientation in the hole transport layer was increased with the rise of annealing temperature, which promoted the increase of the hole mobility. When the hole transport layers with different molecular orientations were applied to OLED devices, the effect of the carrier balance factor on the device performance can be clearly observed.

关键词

有机发光二极管载流子平衡单空穴器件分子取向

Keywords

organic light-emitting diodes(OLED)charge carrier balancehole-only devicemolecular orientation

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