硅酸盐学报2009，Vol.37Issue(11)：1919-1923,5.
蓝色荧光粉Sr_2Al_2SiO_7:Ce~(3+)的制备与发光性能
PREPARATION AND LUMINESCENCE PROPERTIES OF BLUE PHOSPHOR Sr_2Al_2SiO_7:Ce~(3+)
摘要
Abstract
A lrivalent ion of cerium(Ce~(3+))doped Sr_2Al_2SiO_7 blue phosphor powder was prepared by high temperature solid state method under H_2 and N_2 reducing atmosphere.The crystal structure and particle morphology of the phosphor powder were investigated by the X-ray diffraction and scanning electron microscopy, respectively. The effects of mole content of Ce~(3+) and calcining temperature on the luminescence properties of the Sr_2Al_2SiO_7:Ce~(3+) sample were discussed. The results indicate that the sample prepared at 1 400℃ has a single Sr_2Al_2SiO_7 phase and good crystalline state,and its crystalline grain size is about 2.0μm. The luminous intensity of Sr_2Al_2SiO_7:0.03Ce~(3+)calcined at 1 400℃for 10 h reaches the maximum value. The excitation and emission spectra have broad band peaks of 350-420 um and 450-650 nm, respectively, and the emission and excitation peaks are located at 478 nm by ultraviolet (UV) light exciting and at 362 nm.It indicates that this phosphor is a good candidate for UV chip based white light-emitting diodes.关键词
硅铝酸锶/荧光粉/固相法/发光性能Key words
strontium aluminosilicate/blue phosphor/luminescence/solid state method/luminescent properties分类
数理科学引用本文复制引用
李旭,关丽,杨志平,张玮,闻建伟..蓝色荧光粉Sr_2Al_2SiO_7:Ce~(3+)的制备与发光性能[J].硅酸盐学报,2009,37(11):1919-1923,5.基金项目
国家自然科学基金(10847116) （10847116）
河北省自然科学基金光电料基地专项(088007) （088007）
河北大学自然科学研究计划(y20060资助项目. （）
