Cerium (Ce3+ )-doped (1, 3, and 7 mol%) yttrium vanadate phosphors were prepared using a co-precipitation technique. The structural and optical properties of the synthesized samples were studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), optical absorption, and photoluminescence (PL) spectroscopy techniques. The tetragonal structure and the formation of the nanosized crystallites in the YVO4 :Ce phosphor were confirmed using XRD analysis. HR-TEM morphology showed rod-like nanoparticles of different sizes. Optical absorption spectra demonstrated strong absorption bands at 268 and 276 nm. PL spectra showed strong peaks at 546, 574, and 691 nm following excitation at 300 nm. The calculated CIE chromaticity coordinates demonstrated that YVO4 :Ce could be used as a novel phosphor for the development of light-emitting diode lamps.

中文翻译：

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铈掺杂钒酸钇钇磷光体的发光研究。

使用共沉淀技术制备了铈（Ce3 +）掺杂的（1、3和7 mol％）钒酸钇磷光体。使用X射线衍射（XRD），傅里叶变换红外光谱，扫描电子显微镜（SEM），高分辨率透射电子显微镜（HR-TEM），光学吸收和光致发光（ PL）光谱技术。使用XRD分析确认了YVO4：Ce荧光粉的四方结构和纳米微晶的形成。HR-TEM形态显示不同大小的棒状纳米颗粒。光学吸收光谱显示在268和276 nm处有很强的吸收带。在300 nm激发后，PL光谱在546、574和691 nm处显示强峰。