摘要
采用沉淀法,以不同配比的NH4HCO3+NH3.H2O作为混合沉淀剂制备了YAG:Ce荧光粉。利用激发光谱、发射光谱、XRD和TEM对其光学特性和形貌进行了研究。结果表明,使用混合沉淀剂可提高YAG:Ce荧光粉的发光强度,当混合沉淀剂为1mol/L碳酸氢铵+4mol/L氨水时,荧光粉的发光强度最大,样品的生成物为纯YAG相粉体,其粒径分布均匀,分散性良好,呈球形,颗粒大小为1μm左右。
The mixed precipitant of NH4 HCO3＋NHa · H2O with different mixture ratio is used to synthesize YAG ： Ce phosphor by precipitation method. The optical properties and morphology are characterized by excitation spectrum, emission spectrum, X-ray diffraction（XRD） and transmission electron microscope（TEM）. The results show that the luminescent intensity of YAG ： Ce phosphor prepared by mixed precipitant is improved. The maximum luminescent intensity of the sample is prepared by mixed precipitant with lmol/L ammonium acid carbonate and 4mol/L ammonia water. This sample is pure phase YAG powder with homogeneous particle size of about 1μm and good dispersibility.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2010年第2期23-25,37,共4页
Materials Reports
基金
国家自然科学基金项目(60678006)
河北省自然科学基金资助项目(F2004000130)
