Nd3+共掺杂CaAl2O4:Eu2+蓝色荧光粉的光致发光光谱

4区材料科学 Q2 Engineering

Advances in Materials Science and Engineering Pub Date : 2007-09-20 DOI:10.1155/2007/23643

H. Ryu, K. S. Bartwal

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引用次数: 8

摘要

采用固相反应法制备了ca2o4: eu2 +与不同浓度的nd3 +共掺杂的荧光材料。eu2 +浓度为1 mol%， nd3 +浓度为0.5 ~ 5 mol%，材料亮度高，发光时间长。采用粉末x射线衍射(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对合成材料的物相和结晶度进行了表征。采用光致发光激发光谱和发射光谱对其发光特性进行了研究。在蓝色区域(λ max = 440 nm)观察到ca2o2: eu2 +， nd3 +的宽带紫外激发发光，这是由于eu2 +离子的构型从4f65d1跃迁到4f7d1。在荧光粉中掺杂Nd +离子产生深阱，产生长余辉磷光。

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Photoluminescent Spectra of Nd3+ Codoped CaAl2O4:Eu2+ Blue Phosphor

Phosphor material CaA l 2 O 4 : Eu 2 + codoped with varying concentrations of Nd 3 + was prepared by solid-state reaction method. Prepared materials with 1 mol% Eu 2 + and Nd 3 + (0.5 to 5 mol%) show high brightness and long persistent luminescence. The phase and crystallinity of the synthesized materials were investigated by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Photoluminescence excitation and emission spectra were taken to investigate the luminescence characteristics. Broadband UV excited luminescence of the CaA l 2 O 4 : Eu 2 + , Nd 3 + was observed in the blue region ( λ max = 440 nm) due to transitions from 4 f 6 5 d 1 to the 4 f 7 configuration of the Eu 2 + ion. The Nd 3 + ion doping in the phosphor generates deep traps which result in long afterglow phosphorescence.

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来源期刊

Advances in Materials Science and Engineering Materials Science-General Materials Science

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Advances in Materials Science and Engineering is a broad scope journal that publishes articles in all areas of materials science and engineering including, but not limited to: -Chemistry and fundamental properties of matter -Material synthesis, fabrication, manufacture, and processing -Magnetic, electrical, thermal, and optical properties of materials -Strength, durability, and mechanical behaviour of materials -Consideration of materials in structural design, modelling, and engineering -Green and renewable materials, and consideration of materials’ life cycles -Materials in specialist applications (such as medicine, energy, aerospace, and nanotechnology)