Photoluminescence properties of Y₂SiO₅ doped with Eu³⁺ phosphor

The high solid state reaction technique is used to create Y₂SiO₅ that is doped with Eu³⁺. The technique is appropriate for mass production. The use of high temperature synthesis procedures can improve luminescence efficiency in several ways. Europium was used in samples at varying concentrations (0.5–1.5 mol%). Transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques were used to characterize the prepared sample. Scherer's formula determined the particle size to be around 45 nm. The excitation and emission spectra of the photoluminescence with varied concentrations of europium are excellent. Broad peaks at 257 nm with a shoulder peak at 275 nm were discovered in the excitation spectra monitored at 617 nm. The emission spectra were observed at 257 nm and show all visible peaking, with the strongest peak being at 617 nm (red emission). Up to 0.5 mol%, the concentration of europium causes an increase in PL spectrum intensity before a reduction in intensity due to concentration quenching. The Commission Internationale de I'Eclairage (CIE) approach was used to determine the spectrophotometric determination. (author)