Abstract
The study used the solid state reaction to synthesize co-doping earth element BaSr2Si3O9: Eu3+, Dy3+ phosphor. To synthesize BaSr2Si3O9 host, we discuss the effect of different firing temperature. In activator doping process, we use Eu(NO3)3?6H2O solution and Dy2O3 for doping and the effect of different doping concentration, firing temperature, Eu3+,Dy3+ doping order on the luminescent properties is observed. Experimental results show that when the BaSr2Si3O9 host lattice in the atmosphere at firing temperature 1100℃ and 1200℃ can be prepared. Emission spectrum measurement results show that the emission peaks of BaSr2Si3O9: Eu3+ phosphor are originated from 5D0→7FJ（J= 0, 1, 2, 3, 4） transitions. The luminous intensity increased as raising the concentration of activator, and the maximum luminous intensity is observed when the Eu3+ doping concentration is 5mol%. BaSr2Si3O9: Eu3+, Dy3+ phosphor, Eu3+ is the main emission center, which show orange-red color and independent of host lattice surroundings. BaSr2Si3O9: Eu3+, Dy3+ phosphor, in the doping order of Eu3+,Dy3+ have better emission intensity. BaSr2Si3O9: Eu3+, Dy3+ phosphor is a novel phosphor. It can be excited in the UV range and blue range. BaSr2Si3O9: Eu3+, Dy3+ phosphor is a potential phosphor for research and development.
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