燃烧法合成稀土纳米长余辉发光材料SrO·xAl_2O_3:Eu^(2+),Dy^(3+)

Combustion Synthesis of Nanometer Long Lasting Phosphors SrO·xAl_2O_3∶Eu^(2+),Dy^(3+)

应用燃烧法在空气中较低的温度(<900℃)下成功地合成了SrO·xAl2O3∶Eu2+,Dy3+稀土纳米长余辉发光材料,并研究了炉温、反应物中铝锶比、助溶剂和可燃物等对发光材料性能的影响。研究结果表明,反应物置于温度为600℃的高温炉中时燃烧得到的产物性能最好,发光粉的粒径在70nm左右,发射光谱的最大波长在520nm左右。与其它合成方法相比,该方法具有合成温度低、反应时间短,获得的产物疏松、硬度小、粒度小等优点。

Eu and Dy activated SrO·xAl_2O_3 nanometer phosphors with long persistence have been synthesized by combustion method in air at lower temperature (<900℃). Influence of the temperature of furnace, the ratio of Al and Sr, the flux, combustibles, etc. on the properties of the sample is studied. The results indicate that the best temperature in the furnace for its synthesis is 600℃. The grain-size of luminescent powders is about 70 nm. The emission spectra wavelength is about 520 nm. It has many advantages when compared with products synthesized by other method, such as lower synthetic temperature, shorter synthetic time, looser resultants, smaller hardness, tiny grain size, and so on.