Y0.97Zr_(1-x)TixO_(2):Eu_(0.03)荧光粉的制备及发光特性研究

Preparation and Luminescence of Y0.97Zr_(1-x)TixO_(2):Eu_(0.03) Phosphor Characteristic Study

采用高温固相法成功制备了一系列红色荧光粉Y0.97Zr_(1-x)TixO_(2):Eu_(0.03)(x=0.2,04,0.6,0.8,1).并且使用X射线衍射仪对荧光粉进行了物相分析,确定了荧光粉的物相结构.在室温下研究了荧光粉的发射光谱和激发光谱.荧光粉在394 nm近紫外光激发条件下产生了3个强发射峰,峰值全部位于580~620 nm范围内.通过在611 nm监测条件下获得的激发光谱,可以知道荧光粉在280~330 nm范围内以及394 nm和467 nm处具有很强的激发强度,与近紫外白光LED激发范围匹配.研究表明,该荧光粉可用作近紫外白光LED的红色荧光材料,在防伪、太阳能发电及照明等领域具有潜在的应用前景.

A series of red phosphors Y0.97Zr_(1-x)TixO_(2):Eu_(0.03)(x=0.2,0.4,0.6,0.8,1)were successfully prepared by a high-tempera-ture solid-phase method.And it was physically analyzed using X-ray diffractometer to determine the physical structure of the phos-phor.The emission and excitation spectra of the phosphor were studied at room temperature.The phosphor produced three strong emission peaks under the near-ultraviolet excitation condition at 394 nm,and the peaks were all located in the range of 580 nm-620 nm.From the excitation spectra obtained under the monitoring condition at 611 nm,it can be known that the phosphor has strong ex-citation intensity in the range of 280 nm-330 nm as well as at 394 nm and 467 nm,which matches with the excitation range of the near-ultraviolet white LED.The study shows that the phosphor can be used as a red fluorescent material for near-ultraviolet white LEDs,which has potential applications in the fields of anti-counterfeiting,solar power generation and lighting.