功率LED高低温特性研究  

The Characteristics of High Power LED at Low and High Temperature

作　　者：郭伟玲[1] 李瑞[1] 贾学姣[1] 高伟[1] 崔德胜[1] 沈光地[1] 

机构地区：[1]北京工业大学电子信息与控制工程学院光电子技术省部共建教育部重点实验室,北京100124

出　　处：《北京工业大学学报》2011年第7期961-966,共6页Journal of Beijing University of Technology

基　　金：国家'八六三'计划资助项目(2009AA03A1A3)

摘　　要：对自制的GaN基大功率白光和蓝光LED及AlGaInP基的大功率红光和黄光LED进行了低温和高温下的光电特性测试,对不同材料的LED的正向电压、相对光强、波长、色温等参数随温度变化的关系进行了测试.实验结果表明,温度对功率型LED的光电特性有很大影响,随温度的降低,LED正向电压升高,峰值波长发生蓝移;高温条件下,LED发光功率降低,峰值波长发生红移.In this paper, the high power GaN-based white and blue light-emitting diodes （LEDs） and AIGaInPbased red and yellow LEDs are fabricated and the electrical and optical properties at low and high temperature are measured. The temperature dependence of forward voltage, relative luminous intensity, wavelength, color temperature of different LEDs are analyzed. Experiment result shows that temperature has great influence on electrical and optical proprieties of high-power LEDs. When the forward voltage increased and peak wavelength blue-shift was observed with decreasing temperature. At high temperature, the optical power of LEDs decreases rapidly and the peak wavelength becames red-shift.

关 键 词：功率LED 低温 正向电压 峰值波长. 

分 类 号：TN312.8[电子电信—物理电子学]