蓝光LED激发MPR-1003红色荧光粉器件性能研究  

The research of the device characteristics on the MPR-1003 red fluorescent material excited by blue LED

作　　者：袁桃利[1] 刘运[1] 张思璐[1] 

机构地区：[1]陕西科技大学理学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2015年第2期165-168,共4页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51272148)

摘　　要：采用蓝光LED芯片激发MPR-1003荧光粉,并对其光谱和光效特性进行了研究.结果表明:涂覆荧光粉后,光谱中包含了蓝光和红光两种成分.随着荧光粉比例的增加,蓝光强度逐渐减小,而红光强度增强.当荧光粉和胶的比例为4∶6时,蓝光波段的峰值完全消失,只在红光波段出现一个发射峰值,器件变为纯红色,色纯度达到99.7%;当荧光粉比例增加时,光效呈下降趋势,分析了光谱及光效变化的原因.最后,对器件的亮度、芯片温度及电压随时间的变化等进行了测试,分析了亮度、温度及电压变化等之间的关系.The spectra and light efficiency are studied firstly,when the MPR-1003 fluorescent material is stimulated by the blue LED chip.It shows that the spectrum contains blue and red components after coated fluorescent material.With the addition of phosphor fraction,the intensity of blue light decreases,whereas the red light increases.When the ratio of the mass of the red fluorescent material to that of glue equals to 4∶6,blue light peak disappear completely,and there is only one peak at red light band.At this time,the LED device appears pure red,the color purity reaches 99.7%.When the fluorescent material mass fraction increases,the light efficiency is on the decline.And analyze the reason of change of the spectra and light efficiency.Finally,the brightness of the device,the chip temperature and voltage as the function of time was tested,and analyse the relationship between the threes.

关 键 词：红色荧光粉 光谱 光效 LED 

分 类 号：TN253[电子电信—物理电子学]