A novel white powder light tunable luminescence in dibarium magnesium disilicate phosphor with Tb3+Eu3+ based on energy transfer

Abstract

The Di barium magnesium Di-silicate Ba2MgSi2O7 (BMSO) with single-doped Tb3 + , Eu3 + phosphors, and co-doped Tb3 + /Eu3 + phosphors were prepared by the combustion method. The structural characterisation was studied by X-ray diffraction (XRD) technique, and an optical property (PL, ML) and luminescence decay curves were utilised to describe each phosphor’s properties. Profound green emission due to the Tb3 + 5D4-7F5 transition was optically canvassed in the Tb3 + single-doped Ba2MgSi2O7 sample, and it was determined that the appropriate concentration quenching process involved a diople-diople interaction. A huge overlap between Tb3 + emission and Eu3 + excitation spectra has consequences for strength transfer from Tb3 + to Eu3 + . Based on the concentration quenching approach, it was found that the energy transfer mechanism is a quadrupole–quadrupole interaction, and the energy transfer critical distance from Tb3 + to Eu3 + ions is predicted to be (6.7). Additionally, by altering the ratio of Tb3 + and Eu3 + concentrations in Ba2MgSi2O7:Tb3 + Eu3 + phosphors, white light emission was produced. According to all the findings, the single-component white light-producing phosphor BMSO: Tb3 + Eu3 + is a promising one.