不同粒径YAG荧光粉对LED封装光源的影响研究

张生冬; 王凤超; 邹军

光电技术应用, 2014, 29 (4): 21, 网络出版: 2014-09-15

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

论文大纲

张生冬王凤超邹军

作者单位

上海应用技术学院与理学院, 上海 201418

荧光粉粒径色温光学性能老化 phosphor particle size color temperature optical properties aging

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、16.7 μm, 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。

Abstract

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 9.3 μm, 13.6 μm and 16.7 μm 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 temperature 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.

参考文献

[1] 金尚忠, 张在宣, 郭志军, 等.白光照明LED 灯温度特性的研究[J]. 发光学报, 2002, 23(4): 399-402.

[2] 李柏承, 张大伟.功率型白光LED封装设计的研究进展[J]. 激光与光电子学进展, 2009, 46(9).

[3] Nakamura S, Fasol G. The blue laser diode: GaN based light emitters and lasers [M]. Berlin: Springer, 1997: 343.

[4] Kang H S, Kang Y C, Jung K Y, et al. Eu-doped barium strontium silicate phosphor particles prepared from spray solution containing NH4Cl flux by spray pyrolysis [J].Mat.Sci.Eng., 2005, 121(1): 81-85.

[5] Lei T, Tan J, Meng X K, et al.Synthesis and luminescence properties of Y3Mg2AlSi2O12: Ce3+ phosphor [J].Chin.J.Lumin [J] .2012, 33(1): 21-25.

[6] Zhao C, Ma M X, Han T, et al.The effect of doping Sr2+ on enhancement of red emission of Y2.78-xSrxGd0.1Al5O12: 0.06Ce3+ phosphors [J].Chin.J.Lumin., 2011, 32(11): 1099-1103.

[7] Chen L, Chu C I, Liu R S.Improvement of emission efficiency and color rendering of high-power LED by controlling size of phosphor particles and utilization of different phosphors [J].Microelectronic Reliab., 2012, 52(5): 900-904.

[8] Ye X Y, Long Z, Yang Y M, et al. Photoluminescence enhancement of YAG Ce3+ phosphor prepared by co-precipitation rheological phase method [J].J.Rare Earth., 2012, 30(1): 21-24.

[9] Zhang S, Li C, Pang R, et al.Long-asting phosphorescence study on Y3Al5O12 doped with different concentrations of Ce3+ [J].J.Rare Earth., 2011, 29(5): 426-430.

[10] Fadlalla H M H, Tang C C.YAG Ce3+ nano-sized particles prepared by precipitation technique [J].Mater.Chem.Phys., 2009, 114(1): 99-102.

[11] HUA You-jie, MA Hong-ping. Synthesis and packaging performance of regular spherical YAG Ce3+ phosphors for white LEDs [J]. Chin J Lumin, 2013, 34(4): 427-432.

[12] Schubert E F, Kim J K. Solid-state light sources getting smart [J].Science, 2005, 308(5726): 1274-1278.

[13] 华有杰, 马红萍, 张驰, 等.用于白光LED 的规则球形YAG Ce3+荧光粉制备及封装性能研究[J]. 发光学报, 2013, 34(4): 427-432.

张生冬, 王凤超, 邹军. 不同粒径YAG荧光粉对LED封装光源的影响研究[J]. 光电技术应用, 2014, 29(4): 21. ZHANG Sheng-dong, WANG Feng-chao, ZOU Jun. Influence Research on LED Encapsulation Light Source from YAG Phosphor with Different Particle Size[J]. Electro-Optic Technology Application, 2014, 29(4): 21.

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