Synthesis And Application Of Europium, Dysprosium Doped Silicate-based Luminescence

Persistent luminescence developed rapidly in resent years and its application fields were constantly expanding too. As two of the high performance persistent luminescence, Eu doped silicate phosphor has more chemical and thermal stability, lower sintering temperature and better consistent to ceramics than aluminate phosphor.So this paper mainly studies the europium and dysprosium doped silicate luminescent material which synthesized by different methods and its performance.The performance of the phosphor were systematically characterized by XRD, SEM fluorescence spectrophotometer, laser particle size analyzer and screen brightness meter and so on. And it studies the factors and optimal synthesis process of the Sr2MgSi207:Eu2+, Dy3+luminescent material,which synthesized by the solid state reaction method, the two-step method and sol-gel-combustion method.as well as the application of silicate luminous powder in ceramic glaze.The research has demonstrated that:The luminescent materials synthesized by solid state method has the best luminesence when being sintered at1250℃with2hours in a reducing atmosphere;boron can effectively reduce the temperature of the solid-phase reaction, but also affect the glow; Which synthesized by the two step method has lower sintering temperature, smaller agglomeration degree and better luminescent properties than traditional solid state reaction method; The luminous powder composited by sol-gel-combustion way has small particles with no milling, but the low brightness; The basis of the composition of the glaze, the proportion of light-emitting powder, calcination temperature and other factors all affect the glow of the luminous glaze.