倒置结构白光有机电致发光器件

张小亮; 徐亚楠; 陈月花

doi:10.37188/CJL.20200197

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倒置结构白光有机电致发光器件

器件制备及器件物理 | 更新时间：2020-11-10

- 倒置结构白光有机电致发光器件
- Inverted White Light Organic-emitting Diodes
- 发光学报 2020年41卷第11期页码：1397-1402
- 作者机构：
  
  南京邮电大学有机电子与信息显示国家重点实验室培育基地, 江苏南京 210023
- 作者简介：
  
  [ "张小亮(1995-), 男, 宁夏中卫人, 硕士研究生, 2018年于天津工业大学获得学士学位, 主要从事高效稳定的有机电致发光器件的研究。E-mail:2504326602@qq.com" ]
  [ "陈月花(1980-), 女, 河南驻马店人, 博士, 助理研究员, 2014年于西安交通大学获得博士学位, 主要从事有机半导体光电子器件方面的研究。E-mail:iamyhchen@njupt.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(61705112);江苏省自然科学基金(BK20170913);江苏高校优势学科建设工程(YX03001)
- DOI：10.37188/CJL.20200197
  中图分类号： TN383.1
- 纸质出版日期：2020-11，
  
  收稿日期：2020-7-8，
  
  录用日期：2020-8-27
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张小亮, 徐亚楠, 陈月花. 倒置结构白光有机电致发光器件[J]. 发光学报, 2020,41(11):1397-1402.

Xiao-liang ZHANG, Ya-nan XU, Yue-hua CHEN. Inverted White Light Organic-emitting Diodes[J]. Chinese Journal of Luminescence, 2020,41(11):1397-1402.
张小亮, 徐亚楠, 陈月花. 倒置结构白光有机电致发光器件[J]. 发光学报, 2020,41(11):1397-1402. DOI： 10.37188/CJL.20200197.

Xiao-liang ZHANG, Ya-nan XU, Yue-hua CHEN. Inverted White Light Organic-emitting Diodes[J]. Chinese Journal of Luminescence, 2020,41(11):1397-1402. DOI： 10.37188/CJL.20200197.

摘要

研究了在倒置白光有机电致发光器件（Organic light-emitting diodes，OLEDs）ITO/ZnO/PEI/EML/TAPC/MoO

/Al中引入Polyethylenimine（PEI）修饰层对器件性能的影响。研究发现，PEI修饰层的引入可以有效降低ZnO电子注入层的功函数，调控器件的电子注入，改善空穴和电子注入平衡，钝化ZnO表面缺陷态，减少激子猝灭。当PEI浓度为1.0 mg/mL时，倒置白光OLED器件性能达到最佳，其亮度和效率分别为11 720 cd·m

-2

和16.0 cd·A

-1

。本研究为后期倒置结构高性能OLED器件的研发奠定了一定的基础。

Abstract

In this paper

polyethylenimine(PEI) was introduced into inverted white light-emitting diodes(IOLEDs) with the structure of ITO/ZnO/PEI/EML/TAPC/MoO

/Al. The effects of PEI as a surface modification layer on the performance of devices were investigated. It is found that the introduction of PEI can effectively reduce the work function of ZnO electron injection layer and control the electron injection of devices

improving the hole and electron injection balance. At the same time

it can passivate the surface defect states of ZnO and reduce exciton quenching. When the concentration of PEI is 1.0 mg/mL

white IOLEDs possess the optimal performance

with the largest brightness of 11 720 cd·m

-2

and efficiency of 16.0 cd·A

-1

respectively. The introduction of PEI modified layer lays a foundation for the further research of inverted OLEDs with high performance.

关键词

PEI界面修饰溶液法倒置白光OLED

Keywords

polyethylenimine(PEI)interface modificationsolution processinginverted white OLED

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