کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5397826 1505875 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tunable colorimetric performance of Al2O3-YAG:Ce3+ eutectic crystal by Ce3+ concentration
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Tunable colorimetric performance of Al2O3-YAG:Ce3+ eutectic crystal by Ce3+ concentration
چکیده انگلیسی
Ce-doped Al2O3-YAG eutectics with different percentage of Ce were successfully grown by the optical floating zone technique. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the structure. The results show that they have typical eutectic structure of interpenetrating sapphire and garnet phases with the tens of microns lamella spacing. The photoluminescence spectra of the eutectics showed that they have wide excitation band, and samples with 1.6 mol% Ce-doped has the highest emission intensity. The eutectic-packaged LED has high luminous efficiency and its color can be modulated by changing Ce concentration. The results reveal that Ce-doped Al2O3-YAG eutectic is a promising phosphor for white LED applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 186, June 2017, Pages 68-71
نویسندگان
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