The Study on the Synthesis and Properties of Rare-earth Oxide Red Long-lasting Phosphor

The Study on the Synthesis and Properties of Rare-earth Oxide Red Long-lasting Phosphor
　　Combustion method and hydrothermal method are used to synthesize preferable Eu3+-activated yttrium oxide long afterglow phosphor. And the two methods are compared.Rare long afterglow was observed in the Y2O3:Eu3+, Ca2+, Ti4+ and the duration can nearly 1h by Combustion method. The maximum emission wavelength is at 609 nm. XRD display a Ball Neodymium Magnets cubic structure of the Y2O3. The Experimental Propertied the long afterglow phosphor Y2O3:Eu3+, M2+, Ti4+ doped different radius Mg, Ca, Sr, Ba, Zn. Ba2+and Sr2+ have The same trend of decay and have the fastest decay.
　　The trend of decay is in the order ofМg2+,Zn2+,Ca2+ form low to high. The Smaller the radius of the ion the easier it is to enter the lattice formed in the appropriate depth of the trap. The Experimental inspected the impact when the Al, Gd ware doping at the afterglow of products. The Experimental found Gd access to growth afterglow time and enhance luminous and Al did not access to growth afterglow time and enhance luminescence.Rare long afterglow was observed in the Y2O3:Eu3+, Mg2+,Ti4+ and the duration can nearly 1h by hydrothermal method. The maximum emission wavelength is at 609 nm. XRD display a cubic structure of the Y2O3 .XRD and TEM show that crystallization of the precursor is conducive to better luminous materials. The Experimental inspected the impact when the Al, Gd ware doping at the afterglow of products. The Experimental found Gd access to growth http://www.chinamagnets.biz/ afterglow time and enhance luminous.Combustion method and hydrothermal method are used to synthesize Y2O3:Eu0.030, Mg0.020, Ti0.030. The two methods are compared that the latter decay slowly and have long afterglow and low luminous intensity.