Structural and Optical Properties of Yellow-Emitting CaGd2ZrSc(AlO4)3:Ce3+ Phosphor for Solid-State Lighting

Single-phase yellow phosphor, CaGd 2-x ZrSc(AlO 4 ) 3 :xCe 3+ (CGZSA:Ce 3+ ), possessing cubic symmetry with varied Ce 3+ concentrations, was synthesized using the solid-state reaction method.The samples were characterized using X-ray diffraction (XRD), excitation spectra, emission spectra, thermal quenching, and decay curves.The cubic phase of CGZSA:Ce 3+ phosphor was confirmed via XRD analysis.The photoluminescence spectra of CGZSA:Ce 3+ phosphor demonstrated that the phosphor could be excited at the wavelength of 440 nm; a broad yellow emission band was centered at 541 nm.These results indicate that the phosphors are adequately excited by blue light and have the potential to function as yellow-emitting phosphors for applications in white lightemitting diodes.