用共沉淀法制备了发绿光的SrAl2O4:Eu2+,Dy3+纳米长余辉发光粉体.用TG-DSC,XRD,SEM和荧光分光光度计等对发光粉体特性进行了表征.结果表明,在1150℃煅烧温度下合成了单相的SrAl2O4发光粉体,发光粉体的形貌为粒状,平均粒径为100 nm.在可见光(波长400 nm)激发下,SrAl2O4:Eu2+,Dy3+纳米发光粉体的发射光谱为峰值位于512 nm的绿色宽带谱.与固相法合成的发光材料相比,发光粉体的激发光谱和发射光谱均发生了蓝移.并探讨了合成温度对发光粉体发光性能的影响.
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