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 Sr2EuxLa1−xAlO5 phosphor
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Preparation and luminescence properties of Sr2EuxLa1−xAlO5 phosphor
چکیده انگلیسی
The red emitting phosphor Sr2EuAlO5 was synthesized through the solid state reaction technique. The strong red emission of Eu3+ peaks around 590 nm and 620 nm was observed. The photoluminescence excitation spectra show a broad O2−-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
نویسندگان
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