Luminescence Performance of BaGd2ZnO5 Microcrystalline Powder Doped with Different Rare Earth Ions

Abstract

A group of BaGd2ZnO5 microcrystalline powders doped with Sm[Formula: see text], Dy[Formula: see text], Nd[Formula: see text] and Er[Formula: see text]/Yb[Formula: see text] were prepared by high temperature solid phase method, respectively. X-ray diffraction (XRD) analysis confirmed that all the products were pure BaGd2ZnO5 crystals, belonging to orthorhombic system and Pbnm space group. The emission spectra of Sm[Formula: see text], Dy[Formula: see text], Nd[Formula: see text] single-doped and Er[Formula: see text]/Yb[Formula: see text] double-doped samples under specific wavelength excitation were measured. The change of luminescence intensity at strong emission peak with doping concentration of doped ions was studied, and concentration quenching effect was found. The CIE color coordinates of the prepared samples were calculated. The results show that all coordinates doped with Sm[Formula: see text] are located in the orange red region. All coordinates of Dy[Formula: see text] doping samples are located in the yellow light region, but close to the white light region. All coordinates of Nd[Formula: see text] doping sample are located in the blue-green region. The upconversion luminescence of Er[Formula: see text]/Yb[Formula: see text] co-doped sample belongs to yellow light region.