CAJ | 학술논문

采用热分解法制备了BaZnF4：Yb,Er纳米颗粒。通过荧光分光光度计、X射线粉末衍射仪( XRD)和透射电子显微镜( TEM)对样品进行了表征。合成样品的形貌为球形,晶相为四方相,平均粒径为8 nm。当敏化剂Yb3+和激活剂Er3+的掺杂摩尔分数分别为20%和4%时,样品的发光性能较好。绿光和红光发射对应的辐射跃迁分别为Er3+离子的2 H11/2→4 I15/2(绿光)和4 S3/2→4 I15/2(绿光),以及Er3+离子的4 F9/2→4 I15/2(红光)。
채용열분해법제비료BaZnF4：Yb,Er납미과립。통과형광분광광도계、X사선분말연사의( XRD)화투사전자현미경( TEM)대양품진행료표정。합성양품적형모위구형,정상위사방상,평균립경위8 nm。당민화제Yb3+화격활제Er3+적참잡마이분수분별위20%화4%시,양품적발광성능교호。록광화홍광발사대응적복사약천분별위Er3+리자적2 H11/2→4 I15/2(록광)화4 S3/2→4 I15/2(록광),이급Er3+리자적4 F9/2→4 I15/2(홍광)。
A series of BaZnF4:Er3+,Yb3+ upconversion luminescence nanoparticles with various do-ping concentrations were synthesized via thermal decomposition method. X-ray diffraction ( XRD) , transmission electron microscope ( TEM ) and fluorescence spectrophotometer were used to investi-gate the morphology, crystal structure and upconversion properties of the samples. The morphology of the sample is ball shape with an average size about 8 nm. 4%Er3+and 20%Yb3+ are the best do-ping mole fraction. Red and green emissions were observed for the synthesized samples under 980 nm excitation. The red and green emissions are corresponding to the transitions 2 H11/2→4 I15/2 ( Green) , 4 S3/2→4 I15/2 ( Green) of Er3+, 4 F9/2→4 I15/2 ( Red) of Er3+ ions, respectively.