燃烧法快速合成铝酸锶:铕及其发光性能

A study on combustion synthesis of strontium aluminates:Eu^(2+) and its luminescence

利用燃烧法在较低温度（900℃）下按化学计量快速合成发光材料nSrO·7Al2O3：Eu2+（n等于1～10）．讨论Sr2+含量、助熔剂浓度及磷含量对磷光体发光性能的影响，并测定4SrO·7Al2O3：Eu2+的发射光谱、激发光谱、X-射线衍射光谱、粒度分布及比表面积．结果表明：4SrO·7Al2O3：Eu2+主要是碱式铝酸盐SrAl3O5（OH）结构．与高温固相反应比较，燃烧法具有反应时间短、制得的产物相对发光亮度高、粒度小、分布均匀及比表面积大等特点．

Using a combustion procedure and following stoichiometry,the phosphors nSrO.7Al2O3: Eu2+ (n = 1 ~ 10) have been synthesised rapidly at lower temperature (<900℃ ).The effect of the contents of Sr2+, the concentration of p2o5 and flux B2O3 on the luminescence of the products have been studied. The emission spectra,excitation spectra,partiele size distribution, specific surface area and X-ray diffraction of 4SrO. 7Al2O3 : Eu2+ have been measured. The results show that the compound mainly exhibits the crystalline structure of SrAl3O5OH. Compared to the high-temperature solid-state reaction,this combustion procedure has advantages of producing the phosphors with smaller panical size,uniform distribution,higher specific surface area and highly efficient luminescence.