کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1810740 | 1025570 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature-dependence of the structural and afterglow luminance properties of polymer/SrAlxOy:Eu2+,Dy3+ composites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Temperature-dependence of the structural and afterglow luminance properties of polymer/SrAlxOy:Eu2+,Dy3+ composites Temperature-dependence of the structural and afterglow luminance properties of polymer/SrAlxOy:Eu2+,Dy3+ composites](/preview/png/1810740.png)
چکیده انگلیسی
Although aluminate phosphors have attracted great interest for applications in lamps, cathode ray tubes and plasma display panels, there still remain issues affecting operational parameters such as luminescence efficiency, stability against temperature, high color purity and perfect decay time. In addition, issues involving important aspects of the monoclinicâhexagonal phase transition temperature still exist. In this work, SrAlxOy:Eu2+,Dy3+ phosphor powders were prepared by the sol-gel method. X-ray diffraction (XRD) has shown that both crystallinity and crystallite sizes increased as the temperature increased. Both SrAl2O4 and Sr2Al3O6 phases were observed. Photoluminescence (PL) characterization shows temperature-dependence, which indicates emission at low and high annealing temperatures originating from Eu2+ and Eu3+ ions. Thermoluminescence glow and decay measurements provided useful insight on the influence of traps on luminescence behavior. Differential scanning calorimetry (DSC) and thermogravimetric studies (TGA) on composites of the phosphor in low density polyethylene (LDPE) demonstrated the varied influence of annealing temperature on some luminescence and thermal properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 10, 15 May 2012, Pages 1556-1560
Journal: Physica B: Condensed Matter - Volume 407, Issue 10, 15 May 2012, Pages 1556-1560
نویسندگان
Daniel B. Bem, A.S. Luyt, B.F. Dejene, H.C. Swart,