High Efficiency Tandem Organic Light-Emitting Diodes with Effective Charge Generation Layer

HOU Lin-tao; WANG Ping; WANG Biao; LIANG Zhen-kai; LIU Peng-yi; WU Bing; ZHANG Xiu-ju

doi:10.3788/YJYXS20112602.0142

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High Efficiency Tandem Organic Light-Emitting Diodes with Effective Charge Generation Layer

Table of contents | 更新时间：2020-08-12

- High Efficiency Tandem Organic Light-Emitting Diodes with Effective Charge Generation Layer
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 2, Pages: 142-146(2011)
- 作者机构：
  
  暨南大学理工学院,广东广州,510632
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20112602.0142
  CLC： TN383+.1
- Received：09 November 2010，
  
  Revised：29 November 2010，
  
  Published Online：06 April 2011，
  
  Published：06 April 2011
- 稿件说明：
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侯林涛, 王平, 王标, 梁振锴, 刘彭义, 吴冰, 张秀菊. 高效叠层有机电致发光器件[J]. 液晶与显示, 2011,26(2): 142-146

HOU Lin-tao, WANG Ping, WANG Biao, LIANG Zhen-kai, LIU Peng-yi, WU Bing, ZHANG Xiu-ju. High Efficiency Tandem Organic Light-Emitting Diodes with Effective Charge Generation Layer[J]. , 2011,26(2): 142-146
侯林涛, 王平, 王标, 梁振锴, 刘彭义, 吴冰, 张秀菊. 高效叠层有机电致发光器件[J]. 液晶与显示, 2011,26(2): 142-146 DOI： 10.3788/YJYXS20112602.0142.

HOU Lin-tao, WANG Ping, WANG Biao, LIANG Zhen-kai, LIU Peng-yi, WU Bing, ZHANG Xiu-ju. High Efficiency Tandem Organic Light-Emitting Diodes with Effective Charge Generation Layer[J]. , 2011,26(2): 142-146 DOI： 10.3788/YJYXS20112602.0142.

摘要

采用Cs

∶ Alq

/MoO

作电荷产生层

制备出高效双单元串联型叠层有机发光器件。双单元叠层有机发光器件发光性能受电荷产生层MoO

的厚度影响很大。当MoO

厚度为30 nm时

叠层器件表现出最好的器件性能

最大电流效率达到14.5 cd/A。在相当宽的低电流密度范围内

30 nm MoO

叠层器件的电流效率是对比单层器件电流效率的2倍以上|但高电流密度下

叠层器件电流效率下降较快。叠层发光器件性能的提高与中间电荷产生层向上下两个发光单元有效的电子、空穴注入有关。

Abstract

By employing cesium carbonate doped tris-(8-hydroxyquinoline) aluminum/MoO

as the effective charge generation layer (CGL)

high efficiency two-unit series connected tandem organic light-emitting diodes were fabricated. It is found the performance of the two-unit tandem devices can be controlled by the thickness of the MoO

layer. The 30 nm-thick MoO

CGL tandem device exhibits the best device performance with the current efficiency of 14.5 cd/A

which is above 2.0 times than that of the control device over a wide range of current densities. Its suggested that the connecting layer broke down under a high current density

leading to the decrease of current efficiency. The improvement of tandem device performance is attributed to the efficient electron and hole injection from charge generation layer to two adjacent emission units.

关键词

Keywords

references

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Characteristic of tandem organic light-emitting diodes with charge generation layer of LiF/Al/F4-TCNQ/NPB

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Related Institution

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