LED热学特性研究及应用实验仪  

Apparatus for research and application of thermal properties of LED

作　　者：陈乾[1] 戴玉蓉[1] 孙贵宁[1] 杨蕾 CHEN Qian DAI Yu-rong SUN Gui-ning YANG Lei(Department of Physics, Southeast University, Nanjing 211189, China Zhongke Instrument Co. , I.td. , Chengdu 610100, China)

机构地区：[1]东南大学物理系,江苏南京211189 [2]四川世纪中科光电技术有限公司,四川成都610100

出　　处：《物理实验》2017年第7期39-42,共4页Physics Experimentation

基　　金：江苏省高等教育学会高校实验室研究委员会资助课题(No.GS2015YB21)

摘　　要：研制了功率型LED热学特性研究及应用实验仪,控温范围为室温~120°C,控温精度为0.5°C,分辨率为0.1°C,设有过载报警功能.通过脉冲电流法准确测量LED结温,并在此基础上研究温度对功率型LED发光效率的影响以及器件热阻等热学特性.Apparatus of power-type LED thermal properties was designed, temperature range from room temperature to 120 ℃, temperature precision of 0. 5 ℃, resolution of 0. 1 ℃ were a- chieved. Overload alarm function was set to improve the service life. Using pulse current method, the accurate junction temperature of a power-type LED was obtained by this apparatus, and the thermal properties, such as illuminance-temperature relation and thermal resistance were studied.

关 键 词：发光二极管 PN结 结温 照度 热阻 

分 类 号：TN312.8[电子电信—物理电子学] O475[理学—半导体物理]