Abstract
In this study, YPO4:Eu3+ microspheres with different Eu3+ dosage concentration were fabricated by a facile hydrothermal route at 200 °C for 10 h in the presence of citric acid. The YPO4:Eu3+ samples were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and luminescence spectroscopy. The XRD results reveal that the YPO4:Eu3+ samples presented a tetragonal structure. The TEM and SEM observations demonstrate that the YPO4:Eu3+ samples with uniform sphere-like morphologies can be obtained at 200 °C for 10 h. The sizes of samples are in the range of 2–2.2 μm. The room temperature luminescence properties of YPO4:Eu3+ samples were studied using an excitation wavelength of 227 nm. The emission spectrum displays the bands associated to the 5D0 → 7FJ (J = 1, 2 and 4) electronic transitions characteristics of the Eu3+ cations at different positions. The influence of Eu3+ dosage concentration on luminescence properties of YPO4:Eu3+ microspheres were studied carefully.
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