Effects of Eu2+, Dy3+ Contents and Particle Sizes on the Luminescent Properties of SrAl2O4 Phosphor by the Sol-Gel Process

Dae Yong Shin; Kyung Nam Kim

doi:10.4028/www.scientific.net/MSF.620-622.473

Paper Titles

Preparation of Ti/Cu Oxide Coating on Alumina by Sol-Gel Method
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Preparation of Nano-Sized ZnO Powder by Freeze-Drying
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Preparation and Properties of PP/PLA /Multiwall Carbon Nanotube Composites Filaments Obtained by Melt Compounding
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The Microstructural Deformation of the Montmorillonite Particles/Polypropylene/Polylactic Acid Nanocomposite Filaments Infused with Plasma Treated Montmorillonite
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Effects of Eu²⁺, Dy³⁺ Contents and Particle Sizes on the Luminescent Properties of SrAl₂O₄ Phosphor by the Sol-Gel Process
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Growth of Highly Orientated and Well-Aligned ZnO Nanowhiskers Using Aqueous Solutions
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The Strain Rate Sensitivity of Plasma Treated Nano TiO_x Particles/PP/PLA Nano-Composites Filaments
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Crystallization and Mechanical Properties of Nano ZnO/PP/PLA Composite Filaments
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Investigation of Microstructure and Machinability of the B₄C/BN Composites
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HomeMaterials Science ForumMaterials Science Forum Vols. 620-622Effects of Eu2+, Dy3+ Contents and Particle Sizes...

Effects of Eu²⁺, Dy³⁺ Contents and Particle Sizes on the Luminescent Properties of SrAl₂O₄ Phosphor by the Sol-Gel Process

Abstract:

A green emitting SrAl2O4:Eu2+, Dy3+ phosphor with high brightness and long afterglow was synthesized by the sol-gel method. SrAl2O4: Eu2+, Dy3+ phosphor exhibited broad band extending from 450 to 650 nm and maximum emission spectra peaking at 520 nm. Three excited levels existed, two shoulders were observed at 270 and 330 nm in addition to the maximum at 360 nm on the excitation spectrum. After the removal of excitation light, the excellent after-glow characteristic of the phosphorescence was obtained as a result of low decay time, although the after-glow intensities of phosphor varied exponentially with the time.