掺杂元素对BaAl12 O19:Mn2+荧光粉发光性能的影响

使用高温固相反应法合成了BaAl12O19:Mn2 荧光粉,研究了Mg,Sr,Eu掺杂元素对荧光粉发光性能的影响.研究结果表明:Mg,Sr的掺杂明显改善了荧光粉的结晶状况,有效地改善了其在VUV激发下的发光性能;随着Mg摩尔分数的增加,相对亮度先升高后降低,色品性能变优;随着Sr摩尔分数的增加,亮度呈先升高再降低的趋势,色坐标变化不大;Eu的掺杂对BaAl12O19:Mn2 荧光粉的发光性能起不利影响,使发光亮度降低、色坐标变差,且使抗热劣化性能明显下降.

Effect of doping on luminescent performance of BaAl12 O19: Mn2+ phosphor

BaAl_(12)O_(19):Mn~(2+) phosphor was synthesized by high temperature solid state reaction method,and effect of Mg,Sr,Eu doping on the luminescent performance of the phosphor was studied.The results show that: crystallization of phosphor is improved obviously,and luminescent performance is increased with the doping of Mg and Sr;the relative brightness exhibits a tendency of low-high-low,and the color coordinates performance is better with the increase of Mg content;the relative brightness also exhibits a tendency of low-high-low,but the color coordinates change little with the increase of Sr content;the luminescent intensity and color coordinates performance are decreased with the doping of Eu,and the heat-resistant property is declined at the same time.