学术论文

      AlGaInP 基 LED 阵列平均结温的质心波长表征

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

      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 tem-peratures 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 tem-peratures 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 ef-fective method to determine the average junction temperature of AlGaInP-based LED array.
      作者: 饶丰 [1] 郭杰 [2] 朱锡芳 [2] 徐安成 [2]
      Author: RAO Feng [1] GUO Jie [2] ZHU Xi-fang [2] XU An-cheng [2]
      作者单位: 常州工学院 光电工程学院,江苏 常州 213002; 常州现代光电技术研究院,江苏 常州 213002; 常州光电子材料与器件重点实验室,江苏 常州 213002 常州工学院 光电工程学院,江苏 常州,213002
      刊 名: 发光学报 ISTICPKU
      年,卷(期): 2014, (9)
      分类号: TN312+.8
      机标分类号: TN3 TP2
      在线出版日期: 2014年9月23日
      基金项目: 江苏高校文化创意协同创新中心项目,常州工学院重点项目,常州光电技术研究院项目