Numerical Study of Heat Dissipation Model for Organic Light-emitting Diodes

LIN Yang; ZHANG Jing; CAI Miao; WEI Bin; YANG Lian-qiao

doi:10.3788/fgxb20153607.0841

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Numerical Study of Heat Dissipation Model for Organic Light-emitting Diodes

更新时间：2020-08-12

- Numerical Study of Heat Dissipation Model for Organic Light-emitting Diodes
- Chinese Journal of Luminescence Vol. 36, Issue 7, Pages: 841-845(2015)
- 作者机构：
  
  1. 上海大学新型显示技术及应用集成教育部重点实验室上海,200072
  2. 桂林电子科技大学机电工程学院,广西桂林,541004
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153607.0841
  CLC： TN383+.1
- Received：03 April 2015，
  
  Revised：28 April 2015，
  
  Published Online：08 May 2015，
  
  Published：03 July 2015
- 稿件说明：
移动端阅览
林洋, 张静, 蔡苗等. 有机电致发光二极管散热机理模拟研究[J]. 发光学报, 2015,36(7): 841-845

LIN Yang, ZHANG Jing, CAI Miao etc. Numerical Study of Heat Dissipation Model for Organic Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2015,36(7): 841-845
林洋, 张静, 蔡苗等. 有机电致发光二极管散热机理模拟研究[J]. 发光学报, 2015,36(7): 841-845 DOI： 10.3788/fgxb20153607.0841.

LIN Yang, ZHANG Jing, CAI Miao etc. Numerical Study of Heat Dissipation Model for Organic Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2015,36(7): 841-845 DOI： 10.3788/fgxb20153607.0841.

摘要

研究了有机电致发光二极管(OLEDs)工作过程中的生热与热传输机制。OLEDs器件产热由载流子复合产生

散热渠道主要由热辐射、对流两部分构成。基于传热学理论计算

发现发光亮度为1 000 cd/m

时

发光占输入功率的15%

热辐射占30%

热对流占55%

器件温度上升了39.4 ℃

并且计算结果与实验数据有良好的匹配。决定器件工作温度的因素有环境、材料、工作功率等。具有不同发光材料的OLEDs器件

其亮度衰减速率不同。

Abstract

The heat generation and heat transfer mechanisms of organic light-emitting diodes (OLEDs) were investigated. Heat is generated in the carrier recombination and then dissipated by thermal radiation and convection. Based on theoretical calculations of heat transfer

we find that at the case of the luminance of 1 000 cd/m

15% of the input power is converted to light

while 30% and 55% of the input power are converted to heat by thermal radiation and convection

respectively. The calculated temperature rise of the device is 39.4 ℃ which fits well with the measured value of 39.3 ℃. The factors affecting the temperature of OLEDs are ambient temperature

materials and input power. The brightness of OLEDs decays at different rates for different light-emitting materials.

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Keywords

references

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