Effect Of Sintering Temperature On Structural And Optical Properties Of CeO₂-Al₂O₃ Nano-Phosphor

The nano-phosphor CeO₂-Al₂O₃ composite was prepared via the sol-gel method, which was subsequently sintered at temperatures 500, 700, 900, and 1000^OC. Various characterization techniques were employed to assess the structural and optical properties of the synthesized powders. X-ray diffraction (XRD) was utilized to examine the phase and structure of the material and Fourier transform infrared spectroscopy (FTIR) analysis was employed to corroborate the XRD results, confirming the phase formation and also investigating the functional groups present within the material. Luminescence properties were investigated through UV-Vis spectroscopy and Fluorescence spectroscopy analyses. Observed the emission at 430 and 530 nm due to the transition of Ce3 + and quantified CIE coordinates at 1000^oC temperature are (0.325,0.330) with CRI value 95. The results show the possibility of material towards the white light sources.