氧化铝粒度和类型对SrAlO:Eu+/Dy+荧光粉形貌和发光性能的影响

4区材料科学 Q2 Engineering

Advances in Materials Science and Engineering Pub Date : 2009-03-04 DOI:10.1155/2009/475074

H. Luitel, T. Watari, T. Torikai, M. Yada

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引用次数: 6

摘要

采用粒径分别为1.0 μm (α)、0.1 μm (α)和0.05 μm (γ)的Al2O3合成了发光强度高、余辉持续时间长的Eu /Dy荧光粉Sr4Al14O25。SEM观察结果表明，当以0.05 μm γ-Al2O3为原料时，形成了尖峰状的细颗粒。当α-Al2O3为0.1 μm时，可以观察到六方厚颗粒。而在1 μm α-Al2O3层中，可以观察到不规则的细颗粒。光致发光实验表明，用0.05 μm的γ-Al2O3制备的荧光粉初始强度和长持续时间都有明显提高。

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Effects of Particle Size and Type of Alumina on the Morphology and Photoluminescence Properties of SrAlO:Eu+/Dy+ Phosphor

Sr4Al14O25:Eu /Dy phosphor with high luminescence intensity and long afterglow duration was synthesized using 1.0 μm (α), 0.1 μm (α), and 0.05 μm (γ) particle sizes of Al2O3. SEM observation results showed that spike-like thin particles were formed when 0.05 μm γ-Al2O3 was used as raw material. Hexagonal thick particles were observed when 0.1 μm α-Al2O3 was used. But irregular, thin particles were observed while using 1 μm α-Al2O3. Photoluminescence measurements showed that both the initial intensity and the long persistency were much higher for the phosphor prepared using γ-Al2O3 of 0.05 μm particle size.

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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)