何潜翔,黄建宇,陈乾

• 1:东南大学物理国家级实验教学示范中心
• 2:东南大学吴健雄学院
• 3:东南大学物理学院

摘要(Abstract)：

本文基于东南大学物理实验中心研发的LED热学特性实验仪,在仪器原有的脉冲电流法基础上,进一步拓展了小电流法测结温的实验内容,并利用这两种方法研究了LED灯珠在升温与降温过程中的结温变化。此外,实验还通过引入光谱仪测量了不同结温灯珠的发光光谱,探索了利用LED光谱测量结温的方法。该实验引导学生围绕LED结温测量这一工程技术问题,对原有的实验仪器和测量方法进行了开放性的拓展,是将传统验证性实验改造成综合性实验的一个成功案例,有效地激发了学生进行实验物理研究的兴趣。

关键词(KeyWords)： 发光二极管;结温;脉冲电流法;小电流法;光谱

Abstract:

Keywords:

基金项目(Foundation): 东南大学教学改革研究与实践项目(2019-075);; 国家自然科学基金面上项目(21973011)

作者(Author): 何潜翔,黄建宇,陈乾

参考文献(References)：

• [1] HECHT J.White-light LEDs promise a bright future for solid state illumination[J].Laser Focus World,2010,46(11):33-37.
• [2] LIU M,RONG B,SALEMINK H W.Evaluation of LED application in general lighting[J].Optical Engineering,2007,46(7):074002.
• [3] 丁天平,郭伟玲,崔碧峰,等.温度对功率LED光谱特性的影响[J].光谱学与光谱分析,2011,31(6):1450-1453.DING T P,GUO W L,CUI B F,et al.The effect of temperature on the PL spectra of high power LED[J].Spectroscopy and Spectral Analysis,2011,31(6):1450-1453.(in Chinese)
• [4] 郭杰,马军山,饶丰,等.基于光谱分布特征参数的白光LED结温测量方法[J].光学仪器,2018,40(5):1-7.GUO J,MA J S,RAO F,et al.White light LED junction temperature measurement method based on the spectral distribution characteristic parameters[J].Optical Instruments,2018,40(5):1-7.(in Chinese)
• [5] 朱简约,李乐天,陈乾.大功率LED结温与器件表面温度关系的研究[J].物理与工程,2017,27(3):18-21.ZHU J Y,LI L T,CHEN Q.A study on the relationship between the junction temperature and surface temperature of high power LED[J].Physics and Engineering,2017,27(3):18-21.(in Chinese)
• [6] 邱培镇,顾菊观,胡岳.基于照度的非接触式大功率白光LED结温测量[J],物理实验,2015,35(6):32-34.QIU P Z,GU J G,HU Y.Non-contact measurement of junction temperature of high power white LED by illumination[J].Physics Experimentation,2015,35(6):32-34.(in Chinese)
• [7] 蒋一成,朱腾飞,慎月强,等.LED结温精密测量及相关因素分析[J].光学仪器,2013,35(3):7-10.JIANG Y C,ZHU T F,SHEN Y Q,et al.Precision measurement of LED junction temperature and the analysis of relevant factors[J].Optical Instruments,2013,35(3):7-10.(in Chinese)
• [8] ZONG Y Q,OHNO Y.New practical method for measurement of high-power LEDs[C].Proc.CIE Expert Symposium on Advances in Photometry and Colorimetry.CIE x033.Turin,Italy,July 7-8,2008:102-106.
• [9] 陈乾,戴玉蓉,孙贵宁,等.LED热学特性研究及应用实验仪[J].物理实验,2017,37(7):39-42.CHEN Q,DAI Y R,SUN G N,et al.Apparatus for research and application of thermal properties of LED[J].Physics Experimentation,2017,37(7):39-42.(in Chinese)
• [10] 黄昆,韩汝琦.固体物理学[M].1版.北京:高等教育出版社,1988.