کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8035801 1518058 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristics of MgO-coated alkaline Earth selenide phosphor prepared by spray pyrolysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Characteristics of MgO-coated alkaline Earth selenide phosphor prepared by spray pyrolysis
چکیده انگلیسی
Spherical submicron sized Eu2 +-activated SrSe and CaSe alkaline earth selenide phosphors were prepared by ultrasonic spray pyrolysis. The particle size decreased with decreasing precursor solution concentration, while the pyrolysis temperature had a negligible effect on the particles size and morphology. Due to the d-f transition of Eu2 +, SrSe:Eu2 + and CaSe:Eu2 + showed the broad band emission with maximum peaks at 565 and 608 nm, respectively. Further, the addition of 10 wt% NH4Cl flux helped to enhance the emission intensity by reducing the surface defects. MgO coating on selenide phosphor surface effectively improved the moisture stability without a significant loss in the luminescence intensity. 5-10 wt% MgO-coated SrSe: Eu2 +, and CaSe:Eu2 + nearly retained their initial luminescence intensity under water condition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 546, 1 November 2013, Pages 98-103
نویسندگان
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