PEG对纳米BaMgAl_(10)O_(17):Eu^(2+)蓝色荧光粉颗粒形貌及其发光性能的影响

Morphology and Luminescence Performance of the Nano-sized BaMgAl_(10)O_(17):Eu^(2+) Phosphor with PEG as Additive

以聚乙二醇(PEG)为改性剂,采用溶液燃烧法成功制备了准球形的PDP用BaMgA l10O17:Eu2+(BAM)蓝色荧光粉。通过X射线粉末衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)以及荧光光谱对获得的试样进行了表征。结晶表明,获得的BAM荧光粉颗粒为准球形、颗粒尺寸为20~40nm。当PEG的分子量(MW)为10000且质量百分比浓度为5.0%时,能获得最佳形貌和最高发光强度的BAM蓝色荧光粉。

Starting from the aqueous solutions of metal nitrates with polyethylene glycol （PEG） as additives, the blue emitting BaMgAl10O17：Eu^2＋ （BAM） phosphor for PDP application was prepared by solution combustion method. X-ray powder diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and photoluminescence spectra were used to characterize the resulted BAM phosphor. The obtained BAM phosphor particles have spherical shape, nanometer size （20-40nm） and its average grain size is about 30nm. In this paper, the effect of PEG on the morphology and luminescence performance of the BAM phosphor was mainly investigated. The results show that adequate amount of PEG was necessary for obtaining spherical particles, and the optimum emission intensity was achieved when the concentration of PEG （ MW = 10000 ） was 5. 0wt% in the precursor solution.