OALib Journal期刊
ISSN: 2333-9721
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易分散球形yag:ce3+荧光粉的制备和性能
Keywords: 无机非金属材料,yag:ce3+,喷雾干燥,助熔剂,荧光性能
Abstract:
?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2?μm;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yag:ce3+的荧光性能。
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