论文标题
强烈的Europium发光在Lanthan-Euripium-erbium-Calcium-vanadate纳米晶体中，这是辅助优化的结果
Strong europium luminescence in lanthan-euripium-erbium-calcium-vanadate nanocrystals, the result of codoping optimization
论文作者
论文摘要
合成并研究了与钙，欧洲蛋白酶和Erbium离子结晶纳米颗粒共同掺杂的目标，其目的是阐明钙和ERBIUM杂质对欧洲离子发光的作用的机制，并以增强的发光强度查找组合物并找到组合物。 XRD分析揭示了晶体结构对掺杂剂浓度的依赖性：低掺杂剂浓度观察到单斜晶相，而四方晶相的含量随着掺杂剂浓度的增加而增加。 SEM研究揭示了具有两种形状的纳米颗粒的形成。光致发光光谱由eRbium和Europium离子内部过渡引起的线组成。已经表明，欧洲离子发光强度对钙和ERBIUM浓度的依赖性是由掺杂剂对晶体晶格结构的累积影响引起的，对欧洲离子的第一个配位领域的缺陷以及激发能传递的效率。
Co-doped with calcium, europium and erbium ions lanthanum vanadate crystalline nanoparticles are synthesized and investigated with a goal to clarify the mechanisms of calcium and erbium impurities effects on europium ions luminescence and to find compositions with enhanced luminescence intensity. The XRD analysis reveals dependence of crystal structure on dopants concentration: monoclinic crystal phase is observed for low dopant concentrations and content of tetragonal crystal phase increases with dopant concentrations increase. The SEM investigation reveals formation of nanoparticles with two types of shapes. Photoluminescence spectra consist of lines caused by inner transitions in the erbium and europium ions. It has been shown that dependence of the europium ions luminescence intensity on the calcium and erbium concentrations is caused by cumulative effects of dopants on crystal lattice structure, on defects in the first coordination sphere of the europium ions and on efficiency of excitation energy transfer.
