选取典型的助熔剂, 利用助熔剂法制备了节能灯用(Ce0.67,Tb0.33)MgAl11O19绿色荧光粉, 并对其发光性能进行了对比测试。研究了各单一或复合助熔剂对(Ce0.67,Tb0.33)MgAl11O19荧光粉的发光亮度及颗粒形貌的作用及影响, 并找到了最佳复合助熔剂组分为0.2%H3BO3+2.0%Li2CO3+2.0%AlF3(质量分数)。所制备的(Ce0.67,Tb0.33)MgAl11O19荧光粉样品具有较为规则的形貌, 且发光亮度与(Ce0.67,Tb0.33)MgAl11O19现有商用粉的比值为103∶100。

The lamp used green (Ce0.67,Tb0.33)MgAl11O19 phosphor was synthesized by the flux method using different fluxes, and the luminescent properties of obtained samples were investigated in details. The influence of single flux and multi-fluxes on the brightness and morphology of particles was also studied. It is found that the optimal components of the multi-fluxes is 0.2%H3BO3+2.0%Li2CO3+2.0%AlF3 (mass fraction). The particles of optimal (Ce0.67,Tb0.33)MgAl11O19 sample have regular and uniform morphology, and the rate of brightness of this sample to present commercial (Ce0.67,Tb0.33)MgAl11O19 phosphor is about 103∶100.