کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1787814 1023452 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Concentration quenching of Eu2+ in Ba2Mg(BO3)2: Eu2+ phosphor
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Concentration quenching of Eu2+ in Ba2Mg(BO3)2: Eu2+ phosphor
چکیده انگلیسی

The red emitting phosphor Ba2Mg(BO3)2: Eu2+ is prepared by the combustion-assisted method. An efficient red emission under conditions ranging from ultraviolet to visible light is observed. The emission spectrum shows a single intensive band centered at 610 nm, which correspond to the 4f65d1 → 4f7 transition of Eu2+. The critical quenching concentration of Eu2+ in Ba2Mg(BO3)2: Eu2+ phosphor is about 0.05 mol. The corresponding concentration quenching mechanism is verified to be a dipole–dipole interaction. The value of the critical transfer distance is calculated as 17.32 Å, which is in good agreement with the value (18 Å) derived from the experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 11, Issue 3, May 2011, Pages 639–642
نویسندگان
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