Influence of blue-light polarization on light scattering in nano-crystal luminescent glass for white light-emitting-diodes  

作　　者：李洪国 张颖涛 钟鼎 徐所成 费沁妮 王达健 

机构地区：[1]School of Science,Tianjin University of Technology [2]School of Materials Science and Engineering [3]Key Laboratory of Display Materials and Photoelectric Devices of Education Ministry of China & Tianjin Key Lab.for Photoelectric Materials and Devices

出　　处：《Optoelectronics Letters》2010年第3期164-167,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 50872091);Tianjin Key Subject for Materials Physics and Chemistry (No. 2006ZD30,06YFJMJC02300)

摘　　要：The influence of the polarized state of blue light on light scattering in InGaN blue chip nano-crystal luminescent glass for solid state lighting is investigated.Based on Rayleigh-Debye approximation theory,theoretical relationships between the light scattering turbidity and wavelength of the incident light,radius and refractive index of the nano-crystals are established to simulate the situations in yttrium aluminate garnet(YAG),silicate and oxynitride based luminescence glass.It is revealed that the scattering turbidity in luminescent glass turns to be the smallest as the effective refractive index of nanocrystals is equal to that of parent glass,and the scattering turbidity for the vertically polarized incident light is greater than that for the un-polarized incident light,while that for the horizontally polarized incident light is smaller than that for the unpolarized incident light under the same conditions.The influence of the polarized state of blue light on light scattering in InGaN blue chip nano-crystal luminescent glass for solid state lighting is investigated.Based on Rayleigh-Debye approximation theory,theoretical relationships between the light scattering turbidity and wavelength of the incident light,radius and refractive index of the nano-crystals are established to simulate the situations in yttrium aluminate garnet（YAG）,silicate and oxynitride based luminescence glass.It is revealed that the scattering turbidity in luminescent glass turns to be the smallest as the effective refractive index of nanocrystals is equal to that of parent glass,and the scattering turbidity for the vertically polarized incident light is greater than that for the un-polarized incident light,while that for the horizontally polarized incident light is smaller than that for the unpolarized incident light under the same conditions.

关 键 词：白光发光二极管 纳米晶体 蓝色玻璃 光偏振态 光散射 入射光波长 有效折射率 发光玻璃 

分 类 号：TN312.8[电子电信—物理电子学] TB383[一般工业技术—材料科学与工程]