کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5403368 1392758 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long lasting phosphorescence of Eu2+ in reduced SrO-B2O3 glasses
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Long lasting phosphorescence of Eu2+ in reduced SrO-B2O3 glasses
چکیده انگلیسی

The blue long-lasting phosphorescence (LLP) phenomenon was observed for Eu2+-doped SrO-B2O3 glasses prepared in the reducing atmosphere. The phosphorescence peaks at about 450 nm due to the 4f5d→4f transition of Eu2+. With the doping of different amounts of Eu2+, the concentration-quenching phenomenon was observed for both the LLP and photoluminescence of the glasses, and the critical concentration for the two cases was same, i.e., 0.02 mol% Eu2+. And by the investigation of the TL curves, the content of Eu2+ had an effect on the trap depth of the samples. At last the possible mechanism of the LLP of the samples was suggested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 126, Issue 2, October 2007, Pages 551-555
نویسندگان
, , , ,