کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1491956 992364 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tunable color emission and afterglow in CaGa2S4: Eu2+, Ho3+ phosphor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Tunable color emission and afterglow in CaGa2S4: Eu2+, Ho3+ phosphor
چکیده انگلیسی
The tunable color emission and persistent luminescence lifetime in phosphor CaGa2S4: Eu2+, Ho3+ were achieved through the introduction of alkaline earth elements Mg, Sr and Ba, in which the Ca was partially replaced. The duration of the persistent luminescence of the material CaGa2S4: Eu2+, Ho3+ was remarkably shortened as Al was introduced, substituting for Ga. The luminescent properties were investigated via thermo-luminescence (TL) glow curves, phosphorescence spectra and decay time curves. These results show that vast changes in trap levels and charge density takes place with introduction of other alkaline earth elements or Al. Trap depths and the trap density were also evaluated by simple methodologies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 42, Issue 12, 4 December 2007, Pages 2032-2039
نویسندگان
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