摘要
通过对BPZ 220/5 W JA55型阳光球泡灯进行额定功率下40℃和60℃温度应力加速寿命实验,分析了该款LED球泡灯的失效机理.通过推导激活能计算公式,建立了计算光衰激活能的理论模型,给出了测试LED球泡灯光衰激活能方法.通过实验测定该款球泡灯的光衰激活能数值为0.67 eV.
Under the rated power,temperature stress accelerated life test of BPZ 220/5 W JA55 bulb lamp was performed under thermal stress of 40℃and 60℃respectively,and the failure mechanism of the LED bulb samples was analyzed.A method to evaluate luminous-flux-attenuation activation energy value for LED bulb lamps was proposed,and a theoretical model to calculate luminous-flux-attenuation activation energy value was established in this paper.Thereby,the luminous-flux attenuation activation energy value of 0.67 eV was determined based on the above mentioned theory.
作者
武德起
武夷平
楚晓杏
WU Deqi;WU Yiping;CHU Xiaoxing(Institute of Microelectrics,Chinese Academy of Sciences,Beijing 100029,China;Industrial Technology Research Institute,Henan Mechanical and Electrical Vocational College,Zhengzhou 451191,China)
出处
《河北大学学报（自然科学版）》
CAS
北大核心
2023年第6期589-594,共6页
Journal of Hebei University(Natural Science Edition)
基金
中国科学院院方向性项目(2A2011YYYJ-1123)
河南省科技攻关项目(232102210157)。
关键词
激活能
LED球泡灯
加速寿命测试
光衰
评估方法
activation energy
LED bulb lamp
accelerated life test
luminous-flux attenuation
evaluation methods
