根据Dorenbos能级模型的推论,利用掺杂Yb3+和Er3+对典型的长余辉材料SrAl2O4:Eu2+,Dy3+(简称SAO:ED)的发光特性(发光强度和余辉时间)进行调制.在发光特性分析中,发展并使用了一种简便易行的解析模型,而不是常用的多项e指数衰减函数的经验模型.研究发现,正如Dorenbos所预言的,Yb+3掺杂确实能够提高SAO:ED的发光...
发光分析表明Dy3+的掺杂没有改变SrAl2O4Eu2+的光致发光光谱和发光中心。热释光谱对比分析结果显示Eu2+的掺杂在SrAl2O4的禁带中引入了两个深度不同的陷阱能级;Dy3+的掺杂并不改变原来陷阱能级的深度,却能够显著地增加原来浅陷阱能级的密度,从而改善了SrAl2O4Eu2+的余辉特性。不同等待时间的热释光谱曲线显示...
The non-grinding long afterglow material SrAl2O4:Eu2+, Dy3+ was prepared by combustion method in home microwave oven directly, after dispersant, frother, comburent, and mineralizer were added into the reacting system. XRD analysis showed that the powders were nearly pure SrAl2O4 phase with ...
Lanthanide ions are usually considered as biocompatible materials, especially Eu3+, Gd3+, Sm3+, Yb3+ and Y3+ ions which were found to have a relatively low toxicity [[10], [11], [12], [13]]. Many works focus on rare earth (RE) ion doped luminescence materials because of the peculia...
The composites are phosphate glass (75NaPO3-25CaF2 and 90NaPO3-10NaF (in mol%)) with embedded phosphors: CaWO4: Yb3+, Tm3+ crystals with blue upconversion and SrAl2O4:Eu2+,Dy3+ with green persistent luminescence. Green persistent luminescence above 0.3 mcd/m2 can be seen for ~ 30 ...
长余辉材料发光衰减掺杂铝酸锶根据Dorenbos能级模型的推论,利用掺杂Yb3+和Er3+对典型的长余辉材料SrAl2O4:Eu2+,Dy3+(简称SAO:ED)的发光特性(发光强度和余辉时间)进行调制.在发光特性分析中,发展并使用了一种简便易行的解析模型,而不是常用的多项e指数衰减函数的经验模型.研究发现,正如Dorenbos所预言的,Yb3+...
SrAl 2O 4:Eu 2+ Dy 3Dy 3Auxiliary activator of Yb 3Long afterglowCombustion methodThe modification effect of the doping of Yb3+ ions, as an auxiliary activator, onto the luminescent properties of SrAl2O4:Eu2+, Dy3+ phosphor was studied for the first time. The phosphorescent nanoparticles...