Green synthesis of Ce3+ doped ZnAl2O4Phosphor using aloe - vera extract and its characterization

Abstract

Cerium ion activated ZnAl2O4 phosphors were first time prepared by efficient and simple biogenic synthesis approach using aloe vera extract. The prepared samples were characterized by x-ray diffraction (XRD), ultraviolet visible spectroscopy (UV), and photoluminescence technique (PL). From XRD technique, the crystal structure of the prepared Ce3+ doped ZnAl2O4 phosphors was calculated and it was a cubic structure. The optical band gap energies of ZnAl2O4 host and Ce3+ doped ZnAl2O4 were calculated using the UV spectroscopy technique. The PL spectra were showed the maximum intensity for Ce3+ doped ZnAl2O4 at 530 nm and 598 nm under 398 nm excitation wavelength. The CIE color co-ordinates of the Ce3+ doped ZnAl2O4 are calculated using radiant imaging color calculator program refer to the 1931 CIE Standard Source C (illuminant Cs (0.3101, 0.3162)).