Structural and luminescence studies of titanium co-doped SrY₂ O₄ :Eu phosphors

Here, europium-doped (1 to 11 mol%) and titanium (1 to 5 mol%)co-doped SrY₂ O₄ :Eu phosphors were synthesized using solid-state reaction method. The synthesized samples were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), and photoluminescence (PL) techniques for structural, morphological, functional group, and photoluminescence studies, respectively. XRD patterns confirmed the formation of pure phase SrY₂ O₄ at 1300°C and structural parameters were further determined using Rietveld refinement. FESEM micrographs revealed that doped and co-doped samples had different morphological features. All the samples were excited at ultraviolet light excitation and emission spectra consisted of peaks corresponding to the Eu ions. The maximum PL intensity was observed for 9 mol% of Eu ions and 3 mol% co-doping of Ti ions. The synthesized phosphors have potential applications in optoelectronics and display devices.