Sr8 Si4O12 Cl8∶Eu2+, Pr3+荧光材料的合成及发光性能

Sr8 Si4O12 Cl8∶Eu2+, Pr3+荧光材料的合成及发光性能
摘要：以硅酸盐和无机盐等为原料，采用高温固相反应法合成出Sr8 Si4O12 Cl8∶Eu2+, Pr3+荧光粉，并用荧光分光光度计和XRD衍射仪对试样进行了理化性能分析和表征，分析了掺杂Pr3+对Sr8Si4012Cl8: Eu2+荧光粉发光性能的影响。实验结果表明：900 ℃烧成3 h的样品物相单一，只含有Sr8 Si4O12Cl8晶相；掺杂Pr3+的样品的发射光谱中均出现两个发射峰，一个发射峰在479nm左右，另一个发射峰在491nm左右；激发光谱的发射峰为355nm左右，发光颜色为蓝绿色。Pr3+的掺杂量为x=0.15时Sr8 Si4O12Cl8∶Eu2+, Pr3+荧光材料的发光性能最佳。
关键词： 荧光粉；发光材料；硅酸盐；镨
Sr8 Si4O12 Cl8∶Eu2+, Pr3+ Synthesis and Fluorescence Properties of light
 

Abstract: Sr8 Si4O12Cl8∶Eu2+, Pr3+ fluorescent materials was synthesized by means of high temperature solid-state reaction method The silicate and inorganic salts as raw materials. The effect of Pr3+ on fluorescent  physical and chemical properties properties of the materials was discussed. The materials was characterized by X－ray diffraction,fluorescencespectrum and so on. The results show that Sr8 Si4O12Cl8∶Eu2+, Pr3+  luminescent materials is synthesized at 900 ℃ for 3h. It has a single phase -the solid solution phase Sr8 Si4O12Cl8 ,Pr3 + doped sample appeared in both the emission spectrum of the two emission peaks, one around the emission peak at 479nm and another emission peak at about 491nm; excitation emission peak around 355nm, light blue-green color. Pr3 + doping amount of x = 0.15 when the Sr8Si4O12Cl8: Eu2 +, Pr3 + luminescence fluorescent material best.
Key words: phosphor powder ;luminescent materials ;silicate; praseodymium

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