可控合成自组装NaYbF_4:Er的研究

采用水热法制备了Er~(3+)掺杂的NaYbF_4上转换发光材料,X射线衍射结果表明,Er~(3+)掺杂没有改变产物的NaYbF_4晶相,EDS图发现该晶体主要成分是Na、Yb和F,同时还发现了Er,说明晶体中成功掺进了Er元素。SEM分析发现产物为圆盘状结构并且没有严重的团聚现象,晶体尺寸均匀。上转换发光光谱图出现了三个比较明显的发光峰,其发光中心分别位于525nm、540nm和660nm,其中660nm处最强。红光强于绿光主要是因为在高浓度Yb~(3+)的作用下Er~(3+)发生了交叉弛豫。

Self-assemble Micron NaYbF4:Er Via Controllable Synthesis

Er3+ doped NaYbF4 up-conversion luminescence materials were prepared by hydrothermal method. X-ray dif-fraction (XRD) results indicate that the Er3+ doped NaYbF4 did not change the phase of product, EDS shows the main ingredient of the crystal is Na,Yb,F and Er,which indicate Er doped into the crystal successfully. SEM analy-sis indicates that product is round disk structure and no serious phenomenon of agglomeration, with a uniform size. There are three obvious photoluminescence peaks on Up-conversion luminescence spectra, the luminescence center at 525nm, 540nm and 660nm, the strongest is 660nm. Due to the high concentration of Yb3+, Er3+ shows cross relax-ation,red light is better than green light.