采用简单的水热反应合成了新型棒状、棒束状和针状花型的四方相LaVO4:Dy3+晶体,用X粉末衍射(XRD)、扫描电镜(SEM)和荧光光谱(PL)分别测试了水热产品的物相结构、颗粒形貌和荧光性能.实验结果表明,前驱体浓度和反应温度对不同形貌LaVO4:Dy3+晶体的形成起到了关键作用。花状LaVO4:Dy3+晶体比棒状和棒束状样品具有更好的蓝黄比(B/Y),同时阐述了LaVO4:Dy3+同质异形体的形成机制. A new type of tetragonal LaVO4: Dy3 + crystal with rod, rod and acicular patterns was synthesized by a simple hydrothermal reaction. The XRD, SEM and PL spectra of water The phase structure, particle morphology and fluorescence of the hot product were investigated.The experimental results show that the precursor concentration and reaction temperature play a key role in the formation of LaVO4: Dy3 + crystals with different morphologies. The flower-like LaVO 4: Dy 3 + crystal has a better blue / yellow ratio (B / Y) than the rod-like and rod-like samples and the formation mechanism of the LaVO 4: Dy 3 + isoforms.