Average Junction Temperature Determination of AlGaInP-based LED Array by Using Centriod Wavelength

RAO Feng; GUO Jie; ZHU Xi-fang; XU An-cheng

doi:10.3788/fgxb20143509.1093

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Average Junction Temperature Determination of AlGaInP-based LED Array by Using Centriod Wavelength

更新时间：2020-08-12

- Average Junction Temperature Determination of AlGaInP-based LED Array by Using Centriod Wavelength
- Chinese Journal of Luminescence Vol. 35, Issue 9, Pages: 1093-1097(2014)
- 作者机构：
  
  1. 常州现代光电技术研究院,江苏常州,213002
  2. 常州工学院光电工程学院,江苏常州,213002
  3. 常州光电子材料与器件重点实验室,江苏常州,213002
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143509.1093
  CLC： TN312+.8
- Received：26 May 2014，
  
  Revised：17 June 2014，
  
  Published：03 September 2014
- 稿件说明：
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饶丰, 郭杰, 朱锡芳等. AlGaInP基LED阵列平均结温的质心波长表征[J]. 发光学报, 2014,35(9): 1093-1097

RAO Feng, GUO Jie, ZHU Xi-fang etc. Average Junction Temperature Determination of AlGaInP-based LED Array by Using Centriod Wavelength[J]. Chinese Journal of Luminescence, 2014,35(9): 1093-1097
饶丰, 郭杰, 朱锡芳等. AlGaInP基LED阵列平均结温的质心波长表征[J]. 发光学报, 2014,35(9): 1093-1097 DOI： 10.3788/fgxb20143509.1093.

RAO Feng, GUO Jie, ZHU Xi-fang etc. Average Junction Temperature Determination of AlGaInP-based LED Array by Using Centriod Wavelength[J]. Chinese Journal of Luminescence, 2014,35(9): 1093-1097 DOI： 10.3788/fgxb20143509.1093.

摘要

在驱动电流为350 mA时，测量了LED阵列在不同衬底温度下的归一化光谱功率分布，然后计算质心波长，并分析其与LED阵列平均结温变化量的关系，最后研究了质心波长表征结温的准确度。研究结果表明：采用1 nm采样间隔的光谱仪，质心波长与平均结温的变化成良好的线性关系，其线性度明显优于中心波长法。同时，质心波长的测量精度更高。因此，质心波长测试是一种可以精确表征AlGaInP基LED阵列平均结温的有效方法。

Abstract

The normalized spectral power distributions of the LED arrays with various substrate temperatures and 350 mA drive current were measured

the centriod wavelengths were calculated

and then the relationships between the centriod wavelength and the change in the average junction temperatures of LED arrays were analyzed. Finally

the accuracy of the new method was studied. The results show that the centriod wavelength measured with spectrometer of 1 nm step changes linearly with the variation of average junction temperature

and the linearity is much better than that of the proposed center wavelength method. Moreover

the precision of estimating the junction temperature with the centroid wavelength is much higher. Therefore

the centroid wavelength test would be an effective method to determine the average junction temperature of AlGaInP-based LED array.

关键词

Keywords

references

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