蓝绿色荧光粉的合成研究

A study of the synthesis of a blue green emitting phosphor

合成了发射光峰值为４８７ｎｍ的蓝绿色荧光粉。研究了以某种碱土金属离子置换铝酸锶中的锶离子的效果。考察了助熔剂的种类和用量以及添加少量磷对制得的荧光体的发光亮度的影响。发现作为原料的薄水铝石的预先热处理温度不同对所得荧光体的发光亮度有显著影响。进行了ＸＲＤ分析，光通维持性和热稳定性测试。结果表明，所合成的荧光粉适用于具有高显色指数的多频带发射荧光灯。

A blue green emitting phosphor with emission peak at 487nm was synthesized. The effect of some alkali earth ions substituting in part for Sr^2+ in strontium aluminate was investigated. The influence of the kind and quantity of flux and addition of small quantity of P on the luminance of resultant phosphor was examined. It has been found that the different calcination temperature of boehmite significantly affects the luminance of resultant phosphor. The XRD, lumen endurance and thermal stability were measured. All the results show that the resultant phosphor can be used for manufacturing multiband emission fluorescent lamp with high colour rendering index.