周期性银微纳结构对微晶玻璃Na3YSi3O9∶Tb3+发光强度的影响  

The Influence of Periodic Silver Nanostructures on Cathodoluminescent Intensity of Glass Ceramic Na3YSi3O9∶Tb3+

作　　者：戚世梅 刘军 赵文玉[3] QI Shimei;LIU Jun;ZHAO Wenyu(Xinxiang Quality and Technical Supervision, Inspection and Testing center,Xinxiang 453000, Henan, China;The Battery Research Institute of Henan, Xinxiang 453000, Henan, China;School of Chemistry and ChemicalEngineering, Inner Mongolia University of Science and Technology, Baotou 014000,Inner Mongolia, China)

机构地区：[1]新乡市质量技术监督检验测试中心,河南新乡453000 [2]河南电池研究院,河南新乡453000 [3]内蒙古科技大学化学与化工学院,内蒙古包头014000

出　　处：《西南科技大学学报》2019年第2期14-18,共5页Journal of Southwest University of Science and Technology

基　　金：内蒙古自然科学基金资助项目(2018MS02002)

摘　　要：通过熔融法制备微晶玻璃Na3YSi3O9∶Tb^3+,再利用自组装在其表面制备一种周期性微纳结构的银。通过X-射线衍射仪(XRD)确定微晶玻璃的物相并借助原子力显微镜(AFM)对微纳结构的银形貌进行观察。采用荧光光度仪测试样品的阴极射线发光性能并讨论其发光机理。结果表明:微晶玻璃Na3YSi3O9∶Tb^3+表面形成具有周期性凹凸结构的纳米银(周期400nm,高度30nm)。周期性微纳银的形成并未改变微晶玻璃Na3YSi3O9∶Tb^3+的发光位置,其中,主波长仍为547nm,对应于Tb^3+的^5D4→^7F5特征跃迁,但发光强度明显提高,增强因子可达8.6倍以上,这是由于阴极射线发光机理的改变造成的。随着电压和电流的增加,样品的增强因子逐渐增加,其中,电压对增强因子的影响明显大于电流的影响。The glass ceramics Na3YSi3O9∶Tb^3+ was prepared by melting method, and periodic silver nanostructures were prepared by self-assembly on its surface. The phase of the ceramic glass was determined by X-ray powder diffraction (XRD) and the surface morphology was observed by atomic force microscope (AFM). The properties of cathodoluminescent were measured by fluorescence spectrometer and the mechanism of cathodoluminescence was also discussed. The results show that periodic concave and convex nano metallic silver is formed on the surface of the glass ceramics Na3YSi3O9∶Tb^3+. The formation of periodic nanosilver does not change the luminescence position of the glass ceramic Na3YSi3O9∶Tb^3+. The main wavelength is still 547 nm, corresponding to the characteristic transition ^5D4→^7F5 of Tb^3+. However, the luminescence intensity is significantly increased over 8.6 times, which is caused by changing the mechanism of cathodoluminescence. With the increase of voltage and current, the enhancement factor increases gradually. Among them, the effect of voltage on the enhancement factor is significantly greater than that of current.

关 键 词：光学性能 表面等离子体共振 微晶玻璃 阴极射线发光 

分 类 号：O482.31[理学—固体物理]