Photoluminescence properties of YBO3:Eu3+ phosphors prepared via the solvothermal synthesis under supercritical conditions

The preparation process and photoluminescence properties of YBO3:Eu3+ powders synthesized via a solvothermal process using isopropanol as a solvent are reported in this study. Raising solvothermal temperatures resulted in a significant increase in crystallinity of YBO3 phase. Single-phased YBO3:Eu3+ phosphor powders were obtained under a supercritical condition. The morphology of the prepared powders varied from a flower-like to a spherical shape with raising the solvothermal temperatures. The photoluminescent intensity of the obtained phosphors increased with a rise in solvothermal temperatures due to enhanced crystallinity and purity of YBO3 phase. The supercritical condition has been demonstrated to facilitate the formation of spherical YBO3:Eu3+ phosphors with high emission intensity.