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

A series of (Ba1-xBi0.01)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 F-4(9/2) to H-6(15/2) of Dy3+ ions. Dy3+-doped phosphors (Ba1-xBi0.01) TiO3: xDy(3+) (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 Ba1-xBi0.01TiO3:0.05Dy(3+). 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.

Automated summary

A series of (Ba1-xBi0.01)TiO3 doped with varying concentrations of Dy3+ ions were prepared by single-step solid-state reaction. The optimum emission intensity was found in Ba1-xBi0.01TiO3:0.05Dy(3+). SEM and EDS studies were conducted to assess the surface morphology and elemental analyses for optimal concentration.