Effect of bismuth ions on the photoluminescence properties of BaTiO3:Dy3+ perovskite phosphors for LEDs application

A series of (Ba_1?xBi_0.01)TiO₃ doped with Dy³⁺ ions of varying concentrations is prepared by single-step solid-state reaction that promulgates solid-state lighting device applications. The cubic phase perovskite structure of the prepared samples is determined by the powder X-ray diffraction results. The emission spectra show evidence of intensive peaks at 572 nm attributing to the ⁴F_9/2 to ⁶H_15/2 of Dy³⁺ ions. Dy³⁺-doped phosphors (Ba_1?xBi_0.01) TiO₃: xDy³⁺ (x?=?0, 0.01, 0.03, 0.05 and 0.07) exhibit yellow emission, and the highest intensity of emission demarcates the optimum concentration of Ba_1?xBi_0.01TiO₃:0.05Dy³⁺. SEM studies to assess the surface morphologies alongside the elemental analyses from energy-dispersive spectroscopy (EDS) extensively for optimal concentration have been ventured. The Commission International De I-Eclairage (CIE) and correlated colour temperature (CCT) analyses authenticate the present phosphor genuine for fabricating light emitting diodes.