红色荧光粉Ca_(0.70)Sr_(0.18)MoO_4:Eu_(0.08)^(3+)的水热合成研究

Hydrothermal Synthesis of Red-emitting Phosphors Ca_(0.70)Sr_(0.18)MoO_4:Eu_(0.08)^(3+)

采用水热合成法制备红色荧光粉Ca_(0.70)Sr_(0.18)MoO_4:Eu_(0.08)^(3+).采用XRD、荧光分光光度计、SEM对其物相、发光性能以及形貌进行测试和表征.结果表明:荧光粉为CaMoO_4物相结构.荧光粉粒径小且粒度分布均匀.pH=7、180℃水热反应12 h,800℃煅烧2 h条件下制备的荧光材料Ca_(0.70)Sr_(0.18)MoO_4:Eu_(0.08)^(3+),位于616 nm处(纯红色)的发光强度最大.Ca_(0.70)Sr_(0.18)MoO_4:Eu_(0.08)^(3+)色坐标比商用的Y_2O_3:Eu^(3+)红色荧光材料更接近于标准红色色坐标.

The red phosphor Ca_（0.70）Sr_（0.18）MoO_4：Eu_（0.08）^（3＋）was prepared by hydrothermal synthesis method.The crystalline phase,morphology and luminescence characteristics of the phosphor particles were characterized by X-ray diffractometer（ XRD）,fluorophotometer and scanning electron microscopy（ SEM）. The results showed that the phosphor was with CaMoO_4 crystalline phase. The phosphor had the advantages of small particle size and the uniform particle size distribution. When hydrothermal reaction condition was at180 ℃ for 12 h,the luminescent intensity（ 616 nm） of Ca_（0.70）Sr_（0.18）MoO_4：Eu_（0.08）^（3＋）prepared at 800 ℃ for2 h was the best. The chromaticity coordinates of Ca_（0.70）Sr_（0.18）MoO_4：Eu_（0.08）^（3＋）was closer to the standard red than that of Y_2O_3： Eu^（3＋）.