A Novel Spectrum Expanding Phenomenon Based on Inserting LiF Layer in Emitting Layer in OLEDs

XIAO Jing; DENG Zhen-bo; TAN Jing-fang; YANG Zhao-hua

doi:10.3788/fgxb20123301.0072

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A Novel Spectrum Expanding Phenomenon Based on Inserting LiF Layer in Emitting Layer in OLEDs

paper | 更新时间：2020-08-12

- A Novel Spectrum Expanding Phenomenon Based on Inserting LiF Layer in Emitting Layer in OLEDs
- Chinese Journal of Luminescence Vol. 33, Issue 1, Pages: 72-76(2012)
- 作者机构：
  
  1. 泰山学院物理与电子工程学院, 山东泰安 271021
  2. 北京交通大学光电子技术研究所, 北京 100044
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20123301.0072
  CLC： TN383+.1
- Received：23 June 2011，
  
  Revised：15 November 2011，
  
  Published Online：10 January 2012，
  
  Published：10 January 2012
- 稿件说明：
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肖静, 邓振波, 谭静芳, 杨兆华. LiF超薄层引起的OLEDs发光光谱展宽[J]. 发光学报, 2012,33(1): 72-76

XIAO Jing, DENG Zhen-bo, TAN Jing-fang, YANG Zhao-hua. A Novel Spectrum Expanding Phenomenon Based on Inserting LiF Layer in Emitting Layer in OLEDs[J]. 发光学报, 2012,33(1): 72-76
肖静, 邓振波, 谭静芳, 杨兆华. LiF超薄层引起的OLEDs发光光谱展宽[J]. 发光学报, 2012,33(1): 72-76 DOI： 10.3788/fgxb20123301.0072.

XIAO Jing, DENG Zhen-bo, TAN Jing-fang, YANG Zhao-hua. A Novel Spectrum Expanding Phenomenon Based on Inserting LiF Layer in Emitting Layer in OLEDs[J]. 发光学报, 2012,33(1): 72-76 DOI： 10.3788/fgxb20123301.0072.

摘要

将LiF插入到发光层Alq

中

制备了有机电致发光器件(OLED)

其器件的结构为:ITO/NPB (45 nm)/Alq

(

nm)/LiF (0.3 nm)/Alq

/Al(150 nm)。发现器件的电致发光谱(Electroluminescence spectra

EL)有非常明显的展宽现象

这为白光器件的制备提供了一条简单的途径。通过对比LiF在Alq

中不同厚度处的发光谱

发现在

=10时谱线展宽最显著

器件最大亮度在22 V时达到8 260 cd/m

最大效率可达 4.83 cd/A

并对其光谱展宽的机理及器件特性进行了分析。

Abstract

A novel organic electroluminescent device was fabricated by interposing a thin LiF layer in Alq

layer in this work. The structure of the device is ITO/NPB (45 nm)/Alq

(

nm)/LiF (0.3 nm)/Alq

/Al (150 nm). All the devices

15) showed expanded EL spectra

and the spectrum expanding is more obvious in the device with

=10 than the others. The highest brightness of this device reached 8 260 cd/m

at a fixed bias of 22 V. The spectra contain tricolor

so this is a simple method to realize white light emitting. We also elucidated the mechanism for expanded EL spectra and investigated the properties of these devices.

关键词

Keywords

references

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