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| Preparation and application of Dy/Eu co-doped silicate phosphor by solid-phase reaction method |
| ZHANG Hui-juan |
| （Department?of?Chemical?Engineering，?Alxa?Vocational?and?Technical?College，?alxa?league?750336， China） |
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Abstract The long afterglow phosphor Ca2MgSi2O7∶Eu， Dy was prepared by solid state reaction method， and then the phosphor was used as raw material for the preparation of fluorescent coating. The crystal form and luminescence properties of the materials were studied through X-ray diffraction， fluorescence spectrum and afterglow decay. The results show that the crystal structure of the phosphor is not changed with the addition of rare earth ions， and the phosphor has the strongest excitation and emission peak at 382 nm and 531 nm respectively， the afterglow time is as long as 15 h. With the increasing concentration of phosphor in fluorescent coating， the fluorescence intensity， viscosity and hardness of the coating are obviously enhanced， and the water absorption rate decreases significantly. The fluorescent coating prepared by Ca2MgSi2O7∶Eu， Dy material has the characteristics of long afterglow time and excellent weather resistance， which has a certain application potential in the field of fluorescent coatings.
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Received: 11 April 2017
Published: 22 December 2017
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2017, Vol. 27 
