不同粒径YAG荧光粉对LED封装光源的影响研究  

Influence Research on LED Encapsulation Light Source from YAG Phosphor with Different Particle Size

作　　者：张生冬 王凤超[1] 邹军[1] 

机构地区：[1]上海应用技术学院与理学院,上海201418

出　　处：《光电技术应用》2014年第4期21-23,75,共4页Electro-Optic Technology Application

基　　金：国家自然基金青年基金(51302171);上海联盟计划(Lm201318);上海应用技术学院大学生科技创新发展基金(PE-2014189)

摘　　要：挑选国内某知名荧光粉企业的三种YAG荧光粉作为研究对象,三种样品的激发光谱相同,中心粒径(D50分别为9.3、13.6、16.7μ用这三种荧光粉,在相同粉胶质量比,相同点胶量的情况下,使用3014型号支架,制作出白光LED灯珠样品。使用分光分度计分别测量老化前后样品的各项光学参数。试验结果显示:随着荧光粉中心粒径的增大,色温向着高色温方向移动;当色温相同时,随着中心粒径的增大,光通量随之增大,使用100 mA电流加速老化一个星期情况下,随着荧光粉粒径的增大,光衰逐渐减小。Three kinds of YAG phosphor is chosen from a famous phosphor enterprise in China as research objects. The samples have same laser spectrum and central particle sizes （D50） are 9.3μm, 13.6μm and 16.7μm respectively. At the condition of same filler-asphalt mass ratio and bonding volume, with the phosphor and 3014 type stand, white light LED lamp bead samples are produced. Optical parameters of the samples before and after aging are measured respectively by a spectrophotometer. Test results show that with the increasing of the center particle size of phosphor, color tem-perature approaches to the direction of high color temperature. When color temperature is constant, with the increasing of center particle size, luminous flux increases. Luminous decay reduces gradually with the increasing of phosphor particle size at the condition of one week accelerating aging time and 100 mA current.

关 键 词：荧光粉 粒径 色温 光学性能 老化 

分 类 号：O482.31[理学—固体物理]