کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1461970 989625 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Near white light emission from K+ ion compensated CaSO4:Dy3+,Eu3+ phosphors
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Near white light emission from K+ ion compensated CaSO4:Dy3+,Eu3+ phosphors
چکیده انگلیسی

Dy3+:Eu3+ doped calcium sulfate (CaSO4:Dy3+,Eu3+) phosphors co-doped with various K+ compensator concentrations were synthesized by recrystallization method. These orthorhombic phased phosphors showed intense multi-color near white light. The multi-color aspect ratios and the emission life times were strongly dependent on K+-concentration. These results suggest that the rare-earth (Re3+) ions are situated at the sites of Ca2+ and the site occupancy was being compensated by K+ ions. The near white light emission and large lifetimes suggest that present phosphor could be potentially applied as a blue excited white light-emitting phosphor for light emitting diodes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 38, Issue 7, September 2012, Pages 5769–5773
نویسندگان
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