Enhancement of photoluminescence in Sr₂CeO₄phosphors by doping with non-rare earth impurities

Abstract

Non-rare earth impurity doped Sr 2 CeO 4 :X (X = Zn, Hg, Al, Ag, Cr) phosphors are prepared by using the combustion method. The structural and photoluminescent properties of the as-prepared phosphors are investigated by X-ray diffraction (XRD) and photoluminescence at room temperature. Experimental results show that zinc addition and firing processing can effectively enhance the photoluminescence of Sr 2 CeO 4 phosphors.

Synthesis of Metal Ion Doped Sr2CeO4 by Hydrothermal Method and Its Luminescent Properties

“…The emission intensity is up to the highest when x = 0.05. Xue et al 12 have studied the luminescence property of Sr2CeO4 doped with Zn 2+ . They considered that the possibility of the emission from the O 2to Ce 4+ transition is expected to be enhanced in Zn-doped Sr2CeO4 as a result of the larger electronegativity and the smaller radius of Zn 2+ ions; excessive Zn 2+ addition increase the mutual interatomic interaction, which results in the decreasing of the emission from the O 2to Ce 4+ transition.…”