Dual-channel enhanced luminescence of double perovskite NaGdMgWO6:Eu3+ phosphor based on alternative excitation and delayed quenching

Both alternative excitation and delayed concentration quenching enhanced the luminescence of NaGd0.5Eu0.5MgWO6 phosphor. Changed structure and spectrum properties were systematically investigated by Rietveld structure refinement, Raman spectrum, Judd-Ofelt theory and concentration quenching theory.