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  • 主管单位:
  • 上海市教育委员会
  • 主办单位:
  • 上海理工大学
  • 主  编:
  • 庄松林
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  • 国际标准刊号:
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  • 国内统一刊号:
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  • 邮发代号:
  • 4-401
  • 单  价:
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  • 定  价:
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郭杰,马军山,饶丰,褚静.采用质心波长表征GaN基白光LED阵列的平均结温[J].上海理工大学学报,2019,41(4):368-373.
采用质心波长表征GaN基白光LED阵列的平均结温
Characterization of the Average Junction Temperature of GaN-Based White LED Arrays by Centriod Wavelength
投稿时间:2018-06-13  
DOI:10.13255/j.cnki.jusst.2019.04.010
中文关键词:  光谱学  结温测量  光谱分析  发光二极管阵列  质心波长
英文关键词:spectroscopy  junction temperature measurement  spectral analysis  light emitting diode arrays  centroid wavelength
基金项目:国家重点研发计划(2017YFF02-10002);江苏省产学研前瞻性项目(BY2016031-05)
作者单位E-mail
郭杰 上海理工大学 光电信息与计算机工程学院, 上海 200093
常州工学院 光电工程学院, 常州 213002 
 
马军山 上海理工大学 光电信息与计算机工程学院, 上海 200093 junshanma@163.com 
饶丰 常州工学院 光电工程学院, 常州 213002  
褚静 常州工学院 光电工程学院, 常州 213002  
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中文摘要:
      结温是影响LED性能的重要参数,快速、准确地测量LED结温对LED产品设计、性能检测具有重要的意义。在不同驱动电流下,测量了GaN基白光LED阵列不同衬底温度时的归一化光谱分布,计算其质心波长,分析了质心波长随LED阵列平均结温变化关系,测量了LED阵列结温,并与中心波长法的测量结果进行对比。研究结果表明:经光谱仪测量,质心波长与平均结温变化存在良好的线性关系,且随着驱动电流的改变,直线斜率呈指数关系变化。与中心波长法相比,本方法的测量准确度更高。因此,采用质心波长测量GaN基白光LED阵列结温是一种直观的非接触的有效方法。
英文摘要:
      The junction temperature is an important parameter that affects LED performance. It is of great significance to measure the junction temperature of LED quickly and accurately for the design and performance testing of LED products. Under different driving currents, the normalized spectral distribution of the GaN-based white-light LED arrays at different substrate temperatures was measured, and the centroid wavelength was calculated. The relationship between the centroid wavelength and the average temperature of the LED array was analyzed. The junction temperature of the array was measured and compared with that measured by the central wavelength method. The results show that there is a good linear relationship between the centroid wavelength and the average junction temperature, and the slope of the straight line changes exponentially with the change of the driving current. Compared with the central wavelength method, the accuracy of this method is higher. Therefore, using centroid wavelength to measure the junction temperature of the GaN-based white LED array is an intuitive, non-contact effective method.
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