کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5442893 | 1510767 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Y2CaAlGe(AlO4)3:Ce and Y2MgAlGe(AlO4)3:Ce garnet phosphors for white LEDs
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
New phosphors with the compositions Y2CaAlGe(AlO4)3:Ce and Y2MgAlGe(AlO4)3:Ce were obtained by co-precipitation technique. Their structural, morphological and luminescence properties were investigated. The 2Î shift observed in XRD patterns was attributed to the substitution of Y3+ and Al3+ ions by Ca2+ (Mg2+) and Ge4+ ions, respectively. It was shown that the composition of the new polycrystalline compounds is uniform. Both new phosphors exhibit a broad luminescence band, as usual for the Ce3+ ion emission in garnets. A shift of the band was observed and attributed to the different crystal field experienced by the Ce3+ ions in inequivalent sites in the complex garnets.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 67, May 2017, Pages 108-112
Journal: Optical Materials - Volume 67, May 2017, Pages 108-112
نویسندگان
Y. Tratsiak, Y. Bokshits, A. Borisevich, M. Korjik, A. VaitkeviÄius, G. Tamulaitis,