کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5400973 1505924 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced luminescence of Sr3Si6O3N8:Eu2+ phosphors by co-doping with Ce3+
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Enhanced luminescence of Sr3Si6O3N8:Eu2+ phosphors by co-doping with Ce3+
چکیده انگلیسی

Eu2+/Ce3+ co-activated Sr3Si6O3N8 phosphor was synthesized by conventional solid-state reaction. Sr3Si6O3N8:Eu2+, Ce3+ green-emitting phosphor could be effectively excited by UV-vis light from 395 to 450 nm, which matched well with the emission of UV LED chips. The luminescence intensity of Sr3Si6O3N8:Eu2+ could be efficiently enhanced by co-doping with Ce3+. The energy transfer (ET) mechanism from Ce3+ to Eu2+ in Sr3Si6O3N8:Ce3+, Eu2+ phosphors is dominated by electric dipole-dipole interaction, and the critical distance is calculated to be about 25.44 Å by theory of energy transfer.

Graphical AbstractThe emission intensity of Sr2.8Si6O3N8: 0.15Eu2+, 0.05Ce3+ is increased by 140% as compared to that of Eu2+ doped Sr3Si6O3N8.144Highlights► Sr3Si6O3N8:Eu2+ green phosphor could be effectively excited by UV chips (395-450 nm). ► Resonant energy transfer between Ce3+ and Eu2+ occurs in the phosphor. ► Emission intensity of the Sr3Si6O3N8:Eu2+ phosphors is enhanced about 140% by co-doping with Ce3+.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 136, April 2013, Pages 204-207
نویسندگان
, , , , , , , , ,