采用高温固相反应法制备Sr3Al2O6-3x/2Nx∶ Eu2+发光材料。发光光谱分析表明, 该材料在400~550 nm可见光激发下, 发射光谱为峰值波长为600 nm的宽带谱。XRD分析结果显示, Sr3Al2O6-3x/2Nx与Sr3Al2O6的晶体结构相同。研究了Eu2+离子浓度对材料发光性能的影响, 结果表明随着Eu2+离子浓度的增加, 材料的发光强度呈现出先增强后减弱的趋势, 当Eu2+浓度为15%时, 发光强度最大。根据Dexter理论, 其浓度猝灭机理是电四极-电四极的相互作用。引入Ce3+作为敏化剂, 样品的发光强度明显增强。

The Sr3Al2O6-3x/2Nx∶Eu2+ phosphor was synthesized by solid-state reaction method. The study of Sr3Al2O6-3x/2Nx∶Eu2+ spectra indicated that the emission spectra was the broad band spectra peaking at 600 nm when exciting at 400~550 nm. The XRD results showed that the crystal structure of Sr3Al2O6-3x/2Nx∶Eu2+ was the same as Sr3Al2O6. Effect of Eu2+ concentration on luminescent intensity of Sr3Al2O6-3x/2Nx∶Eu2+ phosphor was investigated. The results showed that the luminescent intensity firstly increased with increasing Eu2+ content and then decreases. The Eu2+ content corresponding to the maximal luminescent intensity is 15%. According to Dexter theory, the concentration quenching mechanisms are the q-q (quadrupole-quadrupole) interaction. The emission intensity of Sr3Al2O6-3x/2Nx∶Eu2+,Ce3+ is higher than that of the other phosphor activated by Eu2+ only.