铕掺杂钒酸镧纳米棒的溶剂热合成和荧光性能

以乙醇-水混合溶液为溶剂,160℃T成功合成了Eu3+掺杂的LaVO4纳米棒.用X射线衍射(XRD)、透射电子显微镜(TEM)和光致发光(PL)等技术时样品进行表征.XRD和TEM测试结果说明LaVO4:Eu3+纳米棒是纯锆石型四方相结构、晶体结构均匀、没有缺陷,通过调节溶液pH和反应时间能够控制LaVO4:Eu3+纳米的定向组装和晶体生长.PL光谱显示Eu3+掺杂可以显著提高LaVO4纳米棒的荧光性能.另外,对LaVO4:Eu3+纳米棒的形成机制进行了研究.

Solvothermal Synthesis and Fluorescence of Eu3+-doped LaVO4 Nanorods

Eu3+-doped LaVO4 nanorods were synthesized via a modified hydrothermal route in ethanol-water mixtures at 160℃. The structures and fluorescences of the products were investigated using the X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The XRD and TEM results show that the nanorods are pure and structurally uniform which are obtained through a process of directional-assembling and crystal-growth by controlling the pH value and the reaction time, and most of them are flee from dislocation. The PL studies indicated that the rare earth ions Eu3+ improved the properties of the Eu3+-doped LaVO4 naorods evidently. A possible growth mechanism of LaVO4 nanorods was also proposed.