Abstract
In this study, cubic phase Sr2MgSi2O7:Eu2+, Dy3+ long afterglow phosphors are prepared by slurry-assisted high-temperature solid phase (SHT) method. XRD patterns, SEM images, fluorescence spectra, afterglow decay curves, and thermoluminescence curves describe the luminescence properties and microstructure of cubic phase Sr2MgSi2O7: Eu2+, Dy3+ phosphors sintered at different temperatures. Results show that the sintering temperature affects the performance and structure of Sr2MgSi2O7: Eu2+, Dy3+ long afterglow phosphors. Phosphors sintered at 1200 °C show the highest degree of crystallinity and best afterglow properties. More importantly, sintering temperature is significantly lower and the performance is better than that of traditional high-temperature solid phase (HT) method. This method retains simple process characteristics of the HT and effectively reduces the energy consumption during synthesis, which is suitable for large-scale production.
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