摘要
用掺入Ce∶YAG荧光粉的树脂封装蓝光LED芯片,研制可用于水下集鱼灯的大功率LED发光板,并系统地测量其电流、电压特性和发光特性。测量结果表明:输入电流较小时(小于0.5A),电流与电压之间的关系可用指数函数描述,输入电流较大时(大于2.0A),电流与电压的关系可用线性函数描述;LED发光板在450 nm处有发光峰值,为蓝光芯片的自身发光,在550 nm附近有较宽的发光峰,为封装树脂中掺入的Ce∶YAG荧光粉的发光;LED发光板的流明光效最大值接近120 lm/W,在输入电功率接近100 W时,其流明光效仍接近90 lm/W。
Blue LED chips were encapsulated by plastic which were mixed with Ce∶YAG fluorescent powder, and LED lighting plate were designed for high power LED underwater fish aggregation lamp. The current-voltage characteristics and light-emitting properties of LED lighting plate were measured. When the input current is small （less than 0.5 A）, the current-voltage relation could be described by exponential function; when the input current is large （larger than 2.0 A）, the current-voltage relation could be described by a linear function. Emission peak at 450 nm is from blue LED chips, and the wide emission peak near 550nm is from the Ce∶YAG phosphors. The maximum lumen efficiency of LED lighting plate is close to 120 lm/W, and the Lumen lighting effect is no less than 90 lm/W even the input power reaches 100 W.
出处
《农业科技与装备》
2014年第7期28-30,共3页
Agricultural Science & Technology and Equipment
基金
广东省部产学研合作项目新型功能LED产业化应用于捕鱼装备研发(2011B090400294)
