摘要
采用溶胶-凝胶法合成了荧光粉CaMoO4:Dy3+。通过X射线粉末衍射、扫描电镜、荧光光谱等对其进行物相和光谱性能表征,并研究了Dy的掺杂量、不同电荷补偿剂等对其光谱性质的影响。结果表明:Dy最佳掺杂量为3%(摩尔分数),Li2CO3作为电荷补偿剂的效果最好。CaMoO4:Dy3+荧光粉在388nm处可被有效激发,是一种有潜在应用前景的白光LED用黄色荧光粉。
A phosphor CaMoO4 :Dy3+ was synthesized by sol-gel method. X-ray diffraction,SEM and photolumines- cence spectra were employed to characterize its spectra property. The effects of concentration of Dy3+ and charge compensa- tors on the luminescence properties were studied. The results showed that the optimal concentration of Dya+ in CaMoO4 : Dy3+ was about 3% and the Li2COa as charge compensator gave the best improvement to enhance the emission intensity. CaMoO4 :Dy:3+ could be efficiently excited by 388nm,which was promising candidate as yellow component for near-ultravio- let InGaN-based white LED.
出处
《化工新型材料》
CAS
CSCD
北大核心
2013年第12期111-113,共3页
New Chemical Materials
基金
福建省中青年教师教育科研项目(JA13378)
福建船政交通职业学院科技发展基金(KY1114)