以硝酸盐和尿素为基质,采用燃烧法在较低炉温(600～620℃)下制备了SrAl2O4:Eu2+、Dy3+、Pr3+长余辉发光粉体.研究了H3BO3的加入对粉体的相组成、晶体结构、发光性能与长余辉特性的影响.通过对材料的XRD、激发和发射光谱、余辉衰减以及微观形貌分析.结果表明,H3BO3作为一种助溶剂,当其掺杂摩尔百分含量为0.65%时,有利于SrAl2O4纯相的形成,同时对粉体的初始亮度及发光性能有显著的提高,所制得的样品具有质地疏松、结晶度高、掺杂均匀、发光强度好等特点.
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