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采用高压静电纺丝技术和高温焙烧制得CePO4:Dy3+微纳米纤维。通过扫描电子显微镜(SEM)、X-射线衍射(XRD)、差热-热重分析(TG-DTA)及荧光光谱(PL)等测试手段对纤维的表面形貌、纯度、晶型及荧光性质进行了表征。SEM测试结果显示经过1100℃焙烧,纤维直径减小到150 nm左右。XRD测试结果显示焙烧温度越高,样品的结晶性越好,其晶相为单斜晶相,与国际标准数据库No.83-0650基本吻合。FTIR测试结果与XRD测试结果相吻合。荧光光谱测试显示样品具有较好的荧光性质,尤其是发射光谱展示了Dy3+的4F9/2-6H15/2,4 F9/2-6 H13/2标准跃迁并表明发射强度在一定浓度范围内(摩尔分数为0～5.0%)随着Dy3+掺杂浓度的增大而增强。
CePO4: Dy3 + micro-nanofibers were prepared by high-pressure electrospinning and high temperature calcination. The surface morphology, purity, crystalline form and fluorescence properties of the fibers were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), differential thermal-thermogravimetric analysis (TG-DTA) and fluorescence spectroscopy (PL) Characterized. SEM test results show that after calcination at 1100 ℃, the fiber diameter is reduced to about 150 nm. The results of XRD showed that the higher the calcination temperature, the better the crystallinity of the sample and the monoclinic crystal phase, which is in good agreement with the international standard database No. 83-0650. FTIR test results and XRD test results match. Fluorescence spectroscopy shows that the sample has good fluorescence properties, especially the emission spectrum shows the standard transition of 4F9 / 2-6H15 / 2,4 F9 / 2-6 H13 / 2 Dy3 + and shows that the emission intensity is within a certain range of concentration The fraction is 0-5.0%) increases with the doping concentration of Dy3 +.