کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5399496 | 1505903 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and luminescence properties of Sr2EuxLa1âxAlO5 phosphor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The red emitting phosphor Sr2EuAlO5 was synthesized through the solid state reaction technique. The strong red emission of Eu3+ peaks around 590Â nm and 620Â nm was observed. The photoluminescence excitation spectra show a broad O2â-Eu3+ charge-transfer band in UV region and f-f transitions in near UV and visible region. By adding La3+ into the Sr2EuAlO5 phosphor, the red emission enhancement was observed. The luminescence lifetime and external quantum efficiency of these phosphors were measured. The Chromaticity Coordinates of Sr2Eu0.75La0.25AlO5 is x=0.64, y=0.36. The characteristic index shows that the red emission phosphor has high color saturation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 197-200
Journal: Journal of Luminescence - Volume 157, January 2015, Pages 197-200
نویسندگان
Xiaoyuan Sun, Chunjie Li, Xiaoguang He, Lijun Yu, Haiyan Qi, Yunfeng Gao, Feng Gao, Chunlei Wu, Yongshi Luo, Jiahua Zhang,