关键词: LED;SrAl2Si2O8:Eu2+;合成条件

Abstract: A series of luminescence phosphors Sr 0.975 Al2 Si2 O8 :Eu2+0.025 were prepared by solid-state reaction, the effect of the fisrt firing temperature ( T1 ), the fisrt firing time ( t), the second firing temperature(T2) and the concentration of flux H3BO3(W) on the spectrum characteristics and structure of the sample was investigated .The results show that the samples are monoclinic SrAl 2 Si2 O8 , emission intensity, grain size and intensity of X-ray diffraction of the phosphor increase with T1 , t, T2 and W, show the trend of increasing first and then decreasing .When the T1 =1000 ℃, t=150 min, T2 =1250℃, W=6wt;, the synthesis of phosphor Sr 0.975 Al2 Si2 O8:Eu2+0.025 luminescence intensity is strongest , the synthesis conditions are optimized .

Key words: A series of luminescence phosphors Sr 0.975 Al2 Si2 O8 :Eu2+0.025 were prepared by solid-state reaction, the effect of the fisrt firing temperature ( T1 ), the fisrt firing time ( t), the second firing temperature(T2) and the concentration of flux H3BO3(W) on the spectrum characteristics and structure of the sample was investigated .The results show that the samples are monoclinic SrAl 2 Si2 O8 , emission intensity, grain size and intensity of X-ray diffraction of the phosphor increase with T1 , t, T2 and W, show the trend of increasing first and then decreasing .When the T1 =1000 ℃, t=150 min, T2 =1250℃, W=6wt;, the synthesis of phosphor Sr 0.975 Al2 Si2 O8:Eu2+0.025 luminescence intensity is strongest , the synthesis conditions are optimized .