| Summary: | 碩士 === 國立中正大學 === 光機電整合工程所 === 95 === This thesis investigated the synthesis and characterization of Ba3MgSi2O8: xEu, yMn phosphors. We synthesis phosphors is hydrothermal method. The phosphors of Ba3MgSi2O8: xEu, yMn emission the white light (including two bands, one is 475 nm, others is 645 nm) by 370 nm UV light excited. In synthesis processes, our design some parameter to obtained performed white light phosphors. Such as annealing temperatures, the doped concentrations of Eu2+ ions of phosphors and the doped concentrations of Mn2+ ions of phosphors.
According to the result, the phosphors crystallization will be excellent when the annealing temperatures increased. But the annealing temperatures over the 1200 ℃, the phosphors crystal will be change to other compounds. To obtain superior luminescence intensity of phosphors, we will determinate the concentrations of activators of phosphors. The results revels the best luminescence intensity can be obtain by doped 0.02 mole Eu2+ ions and 0.1 mole Mn2+ ions. We can obtain the uniform particle by hydrothermal synthesis method. It is found that luminescence of phosphors can be increase when the particles are uniform.
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