以Liq作为电子注入层的高效有机电致发光器件

吴有智; 郑新友; 朱文清; 丁邦东; 孙润光; 蒋雪茵; 张志林; 许少鸿

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以Liq作为电子注入层的高效有机电致发光器件

研究论文 | 更新时间：2020-08-11

- 以Liq作为电子注入层的高效有机电致发光器件
- Efficiency Improvement of Organic Electroluminescent Devices by Using Liq as an Electron Injection Layer
- 发光学报 2003年24卷第5期页码：473-476
- 作者机构：
  
  1. 上海大学, 材料科学与工程学院, 上海, 201800
  2. 上海大学OLED研究中心上海,201800
- 作者简介：
- 基金信息：
  
  国家自然科学基金重大研究计划(90201034)();国家自然科学基金(60077020)();上海市光科技项目(012261055)资助项目()
- DOI：
  中图分类号： TN383.1;TN873.3
- 收稿日期：2002-11-15，
  
  修回日期：2003-04-07，
  
  纸质出版日期：2003-09-20
- 稿件说明：
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吴有智, 郑新友, 朱文清, 丁邦东, 孙润光, 蒋雪茵, 张志林, 许少鸿. 以Liq作为电子注入层的高效有机电致发光器件[J]. 发光学报, 2003,24(5): 473-476

WU You-zhi, ZHENG Xin-you, ZHU Wen-qing, DING Bang-dong, SUN Run-guang, JIANG Xue-yin, ZHANG Zhi-lin, XU Shao-hong. Efficiency Improvement of Organic Electroluminescent Devices by Using Liq as an Electron Injection Layer[J]. Chinese Journal of Luminescence, 2003,24(5): 473-476
吴有智, 郑新友, 朱文清, 丁邦东, 孙润光, 蒋雪茵, 张志林, 许少鸿. 以Liq作为电子注入层的高效有机电致发光器件[J]. 发光学报, 2003,24(5): 473-476 DOI：

WU You-zhi, ZHENG Xin-you, ZHU Wen-qing, DING Bang-dong, SUN Run-guang, JIANG Xue-yin, ZHANG Zhi-lin, XU Shao-hong. Efficiency Improvement of Organic Electroluminescent Devices by Using Liq as an Electron Injection Layer[J]. Chinese Journal of Luminescence, 2003,24(5): 473-476 DOI：

摘要

利用Liq(8-hydroxy-quinolinato lithium)作电子注入层

制备了结构为ITO(indium tin oxide)/TPD(N

N′-diphenyl-N

N′-bis(3-methylphenyl)-1

1′biphenyl-4

4′diamine)/Alq

(tris-(8-hydroxy-quinolinato)aluminum)/Liq/Al的电致发光器件。实验表明

以Liq作为电子注入层器件的效率约为无Liq器件的5倍。其原因可归于Liq在金属铝电极与Alq

有机层之间产生偶极层

从而形成铝与有机层间的欧姆接触

使电子注入效率大幅提高。

Abstract

Highly efficient organic electroluminescent devices (OLEDs) need to achieve an effective and balanced injection of carriers. The injection of holes is usually easier than that of electrons in most of OLEDs. In order to investigate the mechanism and the effect of using 8-hydroxy-quinolinato lithium (Liq) as an injection layer on the performance of OLEDs

devices with a structure of ITO (indium tin oxide)/TPD (N

N′-diphenyl-N

N′-bis (3-methylphenyl)-1

1′biphenyl-4

4′diamine)/Alq

(tris-(8-hydroxy-quinolinato) aluminum)/Liq/Al were prepared. Experimental results showed that the efficiency of the device with Liq as an electron injection layer is very similar to that of device with LiF as an electron injection layer

but is got about five times higher than that without Liq. This may be attributed to the enhancement of electron injection from the introduction of Liq

which generate a dipole layer and form an ohmic contact between aluminum electrode and organic Alq

layer.

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