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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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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
Journal: Materials Research Bulletin - Volume 42, Issue 12, 4 December 2007, Pages 2032-2039
نویسندگان
Chongfeng Guo, Qiang Tang, Dexiu Huang, Chunxiang Zhang, Qiang Su,