【摘要】 将微波均相沉淀与喷雾干燥相结合,并添加助熔剂辅助煅烧制备出单相YAG:Ce³⁺荧光粉体,研究了微波均相沉淀与喷雾干燥的共同作用对煅烧条件和YAG:Ce³⁺荧光粉颗粒形貌、分散性和荧光性能的影响。结果表明,这种单相YAG:Ce³⁺荧光粉体具有良好分散性,平均粒径为2μm;将微波均相沉淀与喷雾干燥相结合能制备出分散性好的球形YAG前驱体颗粒;添加NaF助熔剂使煅烧温度降低至1150℃,并得到纯YAG晶相;随着NaF添加量的增加荧光粉结晶度提高、发光强度增强、发射光谱蓝移;NaF添加量（质量分数）为6%时荧光粉的荧光强度最高,且与单一助熔剂比较,H₃BO₃ NaF混合助熔剂能更好的改善YAC:Ce³⁺的荧光性能。更多还原

【Abstract】 The well-dispersive single-phase YAG:Ce³⁺ phosphors with average particle size of 2μm were synthesized by microwave homogeneous precipitation and spray-drying method,combining with fluxassisted calcination.The effect of combined actions on calcination conditions and morphology,dispersity and luminescence performance of YAG:Ce³⁺ particles was investigated.The results show that spherical-like YAG precursor can be obtained by a combination of microwave homogeneous precipitation and spray-drying methods,and the formation temperature of pure phase of YAG lowered to 1150℃with NaF as a flux. The crystallization and emission intensity are obviously improved with increasing contents of NaF flux,and blue-shift in the PL spectrum was found.The maximum emission intensity was obtained after 6wt%NaF was added,and H₃BO₃-NaF flux can lead to a better luminescence property of YAG:Ce³⁺ compared to that by NaF flux.更多还原