کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5026411 1369865 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photoluminescent properties of novel red-emitting GdSr2AlO5:Eu3+ phosphors
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Photoluminescent properties of novel red-emitting GdSr2AlO5:Eu3+ phosphors
چکیده انگلیسی
Red-emitting GdSr2AlO5:Eu3+ phosphors were synthesized by a modified citrate sol-gel route. The tetragonal phase of the GdSr2AlO5:Eu3+ phosphors were confirmed by measuring the XRD patterns. The photoluminescence excitation (PLE) and emission (PL) properties of these phosphors were carried out to analyze their emission performance. The PLE spectra of the GdSr2AlO5:Eu3+ phosphors exhibited the high intense charge transfer band and typical f-f transitions of Eu3+ ions. The PL spectra of GdSr2AlO5:Eu3+ phosphors unveiled the red emission with the band centered at 625 nm, which is originated from the 5D0 → 7F2 transition. The Eu3+ ion concentration in the GdSr2AlO5 host lattice was optimized with respect to the 5D0 → 7F2 transition intensities, and was found to be at 4 mol%. The decay curves data of the GdSr2AlO5:Eu3+ phosphors were well fitted with a single exponential function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 127, Issue 22, November 2016, Pages 10614-10620
نویسندگان
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