Aldo-keto synthesis effect on Eu3+ fluorescence in YBO3 compared with solid state diffusion

The red-orange emitting phosphor YBO3:Eu3+ was prepared by aldo-keto method and solid state diffusion. Aldo-keto method implied to decrease the processing time and heating temperature. The red-orange emitting phosphor was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), as well as emission and excitation photoluminescence spectra recorded at room temperature. The result of aldo-keto method showed that the phosphor YBO3:Eu3+ could be obtained at 900 °C in less time ∼60% as compared to solid state diffusion (SSD). The material showed that the strongest emission peak at 595 nm under excitation at 233 nm was only due to forced magnetic dipole 5D0→7F1 transition of Eu3+ ions. Significantly, the emission intensity of YBO3:Eu3+ phosphor prepared by aldo-keto method was relatively higher as compared to that obtained by the solid state diffusion.

Photoluminescence properties of aldo-keto synthesis and solid state diffusion with YBO3:Eu3+ crystal structureFigure optionsDownload as PowerPoint slide