CaZrO_3∶Ln(Ln=Pr^(3+),Sm^(3+),Tb^(3+),Dy^(3+),Tm^(3+))荧光粉的制备与光谱调控

Synthesis and Spectral Tuning of CaZrO_3∶ Ln(Ln = Pr^(3+),Sm^(3+),Tb^(3+),Dy^(3+),Tm^(3+))

采用高温固相法合成了稀土离子Pr3+、Sm3+、Tb3+、Dy3+、Tm3+掺杂的正交相CaZrO3荧光粉。利用X射线粉末衍射(XRD)对样品的结构进行表征,并通过荧光光谱对其发光性质进行了研究。在适当近紫外或蓝光激发下,CaZrO3∶Pr3+产生很强的绿光发射,CaZrO3∶Sm3+可发射550~700 nm的红橙光,Tm3+在CaZrO3中可获得良好的蓝光发射。研究结果表明,通过改变CaZrO3中的掺杂离子可实现其发光颜色的调控,稀土离子掺杂CaZrO3荧光粉是很有潜力的新型发光材料。

The orthorhombic CaZrO3∶ Ln(Ln = Pr3 +,Sm3 +,Tb3 +,Dy3 +,Tm3 +) were successfully synthesized by solid-state reaction method. The crystalline structure of the samples were characterized by X-ray diffraction( XRD). The luminescence properties were investigated using photoluminescence spectra. Under appropriate near UV- or blue light-radiation,CaZrO3∶ Pr3 +showed strong green light emission,CaZrO3∶ Sm3 +showed well reddish orange light in the range of 550- 700 nm,and CaZrO3∶ Tm3 +generated well blue light emission. The results indicate that spectral tuning can be realized by adjusting active ions in CaZrO3,thus rare earth ions-doped CaZrO3 phosphors can be exploited as new luminescence materials.