sral2o4:eu2+， dy3+长余辉荧光粉混合过程对发光性能的影响[外文翻译].zip

材料科学与工程 材料物理与化学，外文文献翻译及原文

Effect of mixing process on the luminescent properties of SrAl2O4:Eu2+, Dy3+long afterglow phosphors

SrAl2O4:Eu2+, Dy3+长余辉荧光粉混合过程对发光性能的影响

Abstract:
A new mixing method was developed for solid-state reaction synthesis of SrAl2O4: Eu2+, Dy3+long afterglow phosphors. The mor-phology and crystal structure of the phosphors were analyzed with scanning electron microscope (SEM) and X-ray diffractometer (XRD).The excitation and emission spectra of the long afterglow phosphors were measured, and the main emission band was around 514 nm. Thedecay time of the product was measured and compared with the phosphors prepared using dry-mixing method and wet-mixing method. It wasfound that the aggregates and impurities in the phosphors prepared using dry-mixing method and wet-mixing method impaired the lumines-cent properties. The phosphors synthesized using the new mixing method had high initial brightness and slow decay speed. This method isconsidered of great potential applications in industry.

摘要:一个新的混合方法名为固态反应合成SrAl2O4:Eu2+, Dy3+ 长余辉荧光粉。用扫描电子显微镜(SEM)和x射线衍射仪(XRD)对荧光粉形态和晶体结构进行分析。测定了长余辉发光材料的激发光谱和发射光谱，和主要的发射波段在514nm。对比采用干混法和湿法混合方法制备的荧光体产品的衰减时间。结果发现，采用干混法和湿混合方法制备的含聚集体和杂质的荧光粉削弱了其荧光属性。该荧光粉的合成使用新的混合方法的初始亮度高，衰减速度慢。这种方法被认为是具有很好的工业应用潜力。