摘要
采用高温固相法制备了可被近紫外光有效激发的NaCa1-x-yBayPO4:Eux3+(0.00≤x≤1.00)荧光粉。分别探讨了不同Eu3+掺杂量对NaCaPO4:Eu3+、NaBaPO4:Eu3+荧光粉发光强度的影响,以及改变Ca2+、Ba2+浓度对NaCa0.94-xBaxPO4:Eu30.+06(x=0.1、0.3、0.5、0.7、0.9)荧光粉发光性质的影响。对样品分别进行了X-射线衍射(XRD)和荧光光谱的测定。XRD结果表明,当烧结温度为900℃时,可以分别得到NaCaPO4和NaBaPO4的纯相;荧光光谱实验测定,NaCa1-x-y BayPO4:Eux3+能够被395nm的紫外光激发,在613nm和595nm处发出强烈的红色和橙色荧光,并且通过调节Ca2+、Ba2+的浓度比例,可以有效控制其发射强度比。
NaCa1-x-yBayPO4:Eux3 +(0.00≤x≤1.00) phosphors had been prepared by solid-state reaction at high-temperature and characterized by powder diffraction(XRD) and fluorescence spectrophotometer.The effect of Eu3 + concentration on luminescent intensity of NaCaPO4 :Eu3 + and NaBaPO4 :Eu3 + phosphors and the luminescent properties of NaCa0.94-xBaxPO4 :Eu30.+06(x = 0.1,0.3,0.5,0.7,0.9) were discussed.The results of XRD showed that NaCaPO4 and NaBaPO4 pure phase had been synthesized after calcining at 900 ℃.Determination of fluorescence intensity showed that the NaCa1-x-yBayPO4 :Eux3 + phosphors can be efficiently excited by an ultraviolet(UV) source at 395nm and emitted strong red-emission lines at 613nm and 595nm,which corresponded to the forced electric dipole 5 D0 → 7 F2 transitions and the magnetic dipole transition 5 D0 → 7 F1 transitions on Eu3 +,respectively.The ratio of the luminescent intensity of the NaCa1-x-y BayPO4 : Eux3 + phosphors at 595nm and 613nm can be effective controlled by changing of the concentration of Ba2 + and Ca2 +.
出处
《化学通报》
CAS
CSCD
北大核心
2011年第4期346-350,共5页
Chemistry
基金
广西大学有色金属及材料加工新技术教育部重点实验室开放基金项目(GXKFJ09-12)资助
关键词
发光
荧光粉
固相反应
Luminescence
Phosphor
Solid-state reaction