کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1488778 992295 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Persistent luminescence in Ba5(PO4)3Cl:Eu2+,R3+ (R = Y, La, Ce, Gd, Tb and Lu)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Persistent luminescence in Ba5(PO4)3Cl:Eu2+,R3+ (R = Y, La, Ce, Gd, Tb and Lu)
چکیده انگلیسی


• The persistent luminescence in Ba5(PO4)3Cl:Eu2+,R3+ was reported.
• The influences of auxiliary codopants was discussed.
• The concentration quenching of persistent luminescence was discussed.

We investigated the persistent luminescence in europium-doped barium chloroapatite upon codoping with auxiliary rare earth ions. Luminescence properties of the phosphors, including photoluminescence, luminescence decay, and thermoluminescence are systematically studied. We formulated a model of persistent luminescence on the basis of the experimental results. In our model, some Eu2+ ions are oxidized to Eu3+ under short UV excitation, and the released electrons are trapped at the positive defect. The persistent luminescence arises from the recombination of these trapped electrons with the photo-ionized Eu3+ ions. The influence of auxiliary codopants was discussed in terms of ionic potential and ionic radius. Eventually, the concentration quenching of persistent luminescence was reported and discussed.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 48, Issue 7, July 2013, Pages 2598–2603
نویسندگان
, , , , ,