摘要
采用燃烧法合成出Ca12Al14O33:Eu2+,Nd3+靛蓝色长余辉发光粉。利用XRD和FE-SEM对产物的物相结构和形貌进行了表征,用激发光谱、发射光谱和余辉衰减曲线对样品的发光性能进行了分析。通过正交试验设计,以余辉时间为指标,研究了Eu2+的掺杂量、Nd3+的掺杂量、H3BO3的用量以及尿素的用量对制备条件的影响。研究结果表明:最优化方案制备的Ca12Al14O33:Eu2+,Nd3+长余辉发光粉的发射光谱呈宽发射谱带,波长范围为390~530 nm,发光峰值位于443 nm,余辉时间长达3 240 s。
Ca12Al14O33∶Eu2＋, Nd3＋long afterglow phosphors emitting indigo light were synthesized by the combustion method. The phase composition and morphology of the products were characterized by XRD and FE-SEM, and the luminescent properties of the samples were investigated by the excitation spectra, the emission spectra and the afterglow decay curves. In order to study the optimal preparation technology of Ca12Al14O33∶Eu2＋, Nd3＋ phosphors, the synthesis conditions were optimized by using the orthogonal design method. With the afterglow time as the parameter, the influence of the amount of Eu2＋, Nd3＋, H3BO3 and urea on the preparation technology was investigated. The results showed that the emission spectra of Ca12Al14O33∶Eu2＋, Nd3＋ powders prepared under the optimum conditions consist of broad emission band from 390 to 530 nm, and that the emission peak locates at 443 nm, and that its afterglow time lasts as long as 3 240 s.
出处
《中国涂料》
CAS
2014年第4期49-53,共5页
China Coatings
