助熔剂种类对绿色荧光粉(Ce0.67, Tb0.33)MgAl11O19晶体结构、形貌及发光强度的影响

助熔剂种类对绿色荧光粉(Ce_0.67, Tb_0.33)MgAl₁₁O₁₉晶体结构、形貌及发光强度的影响

摘要: 采用高温固相法制备了三基色荧光灯用(Ce_0.67, Tb_0.33)MgAl₁₁O₁₉（CMAT）绿色荧光粉，研究了MgF₂、AlF₃、Li₂CO₃和H₃BO₃4种助熔剂对CMAT绿粉物相纯度、粉体颗粒形貌和发光强度的影响。结果表明，用H₃BO₃做助熔剂制备的CMAT绿粉在物相纯度、粉体颗粒形貌和发光强度方面都优于其它三者。

Abstract: (CeO_0.67, Tb_0.33)MgAl₁₁O₁₉ (CMAT) phosphors were synthesized by high temperature solid state reaction. MgF₂, AlF₃, Li₂CO₃ and H₃BO₃ were chosen as fluxes agents, whose influences on phase purity, particle morphology and luminescence intensity of phosphors were investigated. The results indicated that CMAT phosphors presented better results in phase purity, particle morphology and luminescence intensity when applying H₃BO₃ as fluxing agents than the other 3 fluxing agents.