摘要
利用微乳液—共沉淀高温法制备出了掺杂Eu2+摩尔比为10%的BaMgAl10O17:Eu2+(BAM)蓝色发光荧光粉。X-射线衍射(XRD)图谱分析表明所得粉体为单一相;场发射扫描电镜(FE-SEM)照片及粒度分布测试均显示其粒径在2μm左右;真空紫外光辐射下的发光光谱(VUV-PL)显示所得粉体在147及172 nm处有较强的真空紫外吸收,172 nm光激发下的粉体在450 nm处呈现强的宽带发射;单指数拟合后的荧光寿命是1.03μs;最大内量子效率值为0.87±0.04;色坐标(x=0.144,y=0.063)显示所得粉体发光位于标准蓝色区;高温及真空紫外光照射劣化试验表明,利用该方法制备的BAM更稳定、更适合于等离子显示的应用。
Phosphor BaMgAl10O17：Eu^2＋ （BAM： Eu^2＋ ） with 10% Eu^2＋ doping ratio was pxepared by mieroemulsion -co-precipitation-heating method. X-ray diffraction （XRD） patterns disclosed that the powder was a pure BaMgAl10O17 phase. Field emission scanning electron microscopy （FE-SEM） images and the measurement result of size distribution showed that the samples had an average size about 2 μm. The phosphor shows strong absorbability of vacuum ultraviolet （VUV） light at 172 nm and 147 nm and broad blue emission at 450 nm under VUV excitation. The decay time was short as 1. 03 μs and the internal quantum yield was high to 0. 87 ± 0, 04. When baked at 400 - 600 ℃ and irradiated with VUV light for 300 h, the phosphor still keep excellent VUV luminesceace proper Eu^2＋ ties. All the characteristics indicated that BAM ： prepared by this method would be more suitable for PDP application.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期57-61,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广东省自然科学基金资助项目(021716)
广东省科技计划资助项目(B10502)
