Combustion synthesis of Sr2B2O5:Tb3+ green emitting phosphor for solid state lighting

Terbium doped Sr2B2O5 green phosphor was synthesized by combustion synthesis method at about 550 °C. Further, analyzed by XRD technique and XRD pattern of prepared phosphor is well match with standard JCPDs file. The morphology and structure of the phosphor were characterized by scanning electron microscopy. The chromatic coordinates estimated from emission spectra shown by CIE chromatic diagram and values observed are Cx = 0.263, Cy = 0.723. The vibrational characteristics were studied with the help of FTIR. The excitation and emission spectra specify that the prepared phosphor can be effectively excited by 353 nm and reveal bright green emission centered at 545 nm consequent to the D → F transition of Tb3+ ion. From the obtained results it is concluded that present phosphor may be efficient photoluminescent materials for solid-state lighting and energy saving applications.