Simulation and Experimental Verification for The Angle Dependence of The Microcavity Organic Light Emitting Device

ZHANG Chun-yu; WANG Qing-kai; QIN Li; RONG Hua

doi:10.3788/fgxb20153604.0454

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Simulation and Experimental Verification for The Angle Dependence of The Microcavity Organic Light Emitting Device

更新时间：2020-08-12

- Simulation and Experimental Verification for The Angle Dependence of The Microcavity Organic Light Emitting Device
- Chinese Journal of Luminescence Vol. 36, Issue 4, Pages: 454-458(2015)
- 作者机构：
  
  1. 发光学及应用国家重点实验室中国科学院长春光学精密机械与物理研究所,吉林长春,130033
  2. 吉林建筑大学材料科学与工程学院,吉林长春,130118
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153604.0454
  CLC： TN383+.1
- Received：05 January 2015，
  
  Revised：13 February 2015，
  
  Published：03 April 2015
- 稿件说明：
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张春玉, 王庆凯, 秦莉等. 微腔有机电致发光器件角度依赖性的模拟与实验验证[J]. 发光学报, 2015,36(4): 454-458

ZHANG Chun-yu, WANG Qing-kai, QIN Li etc. Simulation and Experimental Verification for The Angle Dependence of The Microcavity Organic Light Emitting Device[J]. Chinese Journal of Luminescence, 2015,36(4): 454-458
张春玉, 王庆凯, 秦莉等. 微腔有机电致发光器件角度依赖性的模拟与实验验证[J]. 发光学报, 2015,36(4): 454-458 DOI： 10.3788/fgxb20153604.0454.

ZHANG Chun-yu, WANG Qing-kai, QIN Li etc. Simulation and Experimental Verification for The Angle Dependence of The Microcavity Organic Light Emitting Device[J]. Chinese Journal of Luminescence, 2015,36(4): 454-458 DOI： 10.3788/fgxb20153604.0454.

摘要

为了分析微腔有机电致发光器件(MOLED)发光的角度依赖性

根据微腔计算公式

采用传输矩阵法进行了模拟计算

并进行了实验验证。所设计器件的结构为Glass/DBR/ITO(58 nm)/NPB(46 nm)/DPVBi(20 nm)/Alq

(56 nm)/LiF(1 nm )/Al(150 nm)。由实验得到的电致发光(EL)谱可以观察到:随着探测角度的加大

发光峰蓝移、强度减小。与模拟得出的不同观测角度下的反射谱进行比较

发现透射峰值与EL峰值相对应。模拟分析发现

这是由于观测角不同

微腔两个反射镜的S和P偏振的反射率及反射相移不同

同时腔内光学厚度发生变化

即微腔长度变化共同作用所导致。

Abstract

In order to analysize the angle dependence of the microcavity organic light emitting device(MOLED)

both simulation research using transmission matrix method and experiment were carried out

based on microcavity principles and relative formations. The structure of the device was designed as Glass/DBR/ITO(58 nm)/NPB(46 nm)/DPVBi(20 nm)/Alq

(56 nm)/LiF(1 nm)/Al(150 nm). The experimental electro-luminescence (EL) spectrum shows that the luminescence peaks blue shift and weaken down with the increasing of the detection angle. Comparing with the simulated reflection spectrum under different detection angle

it is found that the transmission peaks of the reflection spectrum correspond to the EL peaks. Further simulation analysis shows that the two reflection mirrors in the microcavity tend to have different reflection rate and different reflection phase change for S and P polarization light under different detection angle. Meanwhile

the optical thickness of the organic layer in the microcavity also changes under different emitting angle

which induces a change in the effective length of the microcavity. The reasons above all lead to the changes of the EL spectrum.

关键词

Keywords

references

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