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

作者：Koparkar K A; Bajaj N S; Omanwar S K

来源：Journal of Rare Earths, 2015, 33(5): 486-490.

DOI：10.1016/S1002-0721(14)60445-2

• aldo-keto method
• yttria
• europium
• optical materials
• photoluminescence (PL)
• rare earths

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 degrees C in less time similar to 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 D-5(0)-> F-7(1) 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.

• 出版日期2015-5