Title of article
Synthesis and photoluminescence properties of Eu2+-doped Ca2AlSi3O2N5 green phosphors
Author/Authors
Cai، نويسنده , , Chao and Xie، نويسنده , , Wenjie and Hao، نويسنده , , Luyuan and Xu، نويسنده , , Xin and Agathopoulos، نويسنده , , Simeon، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
4
From page
635
To page
638
Abstract
Novel Eu2+-doped Ca2AlSi3O2N5 phosphors with a general formula of EuxCa2−xAlSi3O2N5 were successfully prepared via a solid-state reaction method under a nitrogen atmosphere. The produced phosphors were effectively excited by UV–vis light in the wavelength range between 250 and 400 nm, and featured an intense green emission band which peaked at about 500 nm. The emission spectra featured a red-shift over increasing Eu2+ content and the temperature of heat treatment. The maximum intensity of emission was obtained for x = 0.014 and heat treatment at 1450 °C. The photoluminescence properties of the produced Ca2AlSi3O2N5:Eu2+ phosphors qualify them for consideration in potential use as green phosphors in UVLED-based white LED.
Keywords
Oxynitride , Photoluminescence , LED , Phosphors
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Serial Year
2012
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Record number
2149563
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