发光学报2013，Vol.34Issue(4)：427-432,6.DOI:10.3788/fgxb20133404.0427
用于白光LED的规则球形YAG∶Ce3+荧光粉制备及封装性能研究
Synthesis and Packaging Performance of Regular Spherical YAG∶Ce3+ Phosphors for White LEDs
摘要
Abstract
YAG∶Ce3 + phosphors with regular spherical morphology and different particle size distribution were successfully prepared by solid-state reaction followed by sieving method.XRD analysis revealed that crystal lattice parameters nearly unchanged with the variation of particle size.The effect of particle size distribution on optical properties was investigated by spectrophotometer.The results indicated that the absorption of blue light and emission intensity of phosphors simultaneously decreased with decreasing of particle size.Meanwhile,the maximum emission wavelength showed blue shift and chromaticity shifted toward green region with smaller particle size.The packaging performance suggested that the reduction in particle size will result in reduction of luminous efficiency.In contrast,the colour temperature (Tc) and general colour rendering index (Ra) increased with decreasing of particle size.关键词
荧光粉/光学性能/粒径/白光LEDKey words
phosphors / optical properties / particle size / white LEDs分类
数理科学引用本文复制引用
华有杰,马红萍,张驰,邓德刚,赵士龙,黄立辉,王焕平,徐时清..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):427-432,6.基金项目
国家自然科学基金(51072190,51272243),浙江省自然科学基金(Y1110139),浙江省重点科技创新团队(2010R50016),浙江省科技计划(2012C21064)资助项目 （51072190,51272243）
