溶胶-凝胶法合成CaMoO_4:Dy^(3+)荧光粉及发光性能的研究  

Study on preparation and photoluminescence of a phosphor CaMoO_4:Dy^(3+) by sol-gel method

作　　者：林莹[1] 高绍康[2] 

机构地区：[1]福建船政交通职业学院安全技术与环境工程系,福州350007 [2]福州大学化学化工学院,福州350108

出　　处：《化工新型材料》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)

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.

关 键 词：CaMoO4 DY3+ 荧光粉 溶胶凝胶法 光谱性质 

分 类 号：O482.31[理学—固体物理]