کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398786 | 1505893 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The influence of boric acid on improved persistent luminescence and thermal oxidation resistance of SrAl2O4:Eu2+
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Persistent luminescence of SrAl2O4:Eu2+ has attracted considerable attention due to their high initial brightness, long-lasting time and excellent thermal stability. Here the influence of boric acid on the persistent luminescence and thermal oxidation resistance of SrAl2O4:Eu2+ was investigated in detail. Crystal structural analysis and scanning electron microscopy revealed that with the addition of boron, the unit cell volume decreased and the morphology of the particles became more irregular with sharp edges. Thermogravimetric analysis showed better thermal oxidation resistance accompanied by a change in oxygen vacancy concentration when boron acid is used. Photoluminescence spectra and afterglow decay curves confirm an improved afterglow performance for boron-added SrAl2O4:Eu2+. Thermoluminesence allowed monitoring the changes in the trap states due to the presence of B. Our results imply that the substantial improvement of afterglow performance and the thermal stability in SrAl2O4:Eu2+ can be attributed to the incorporation of boron into the aluminate network.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 167, November 2015, Pages 126-131
Journal: Journal of Luminescence - Volume 167, November 2015, Pages 126-131
نویسندگان
Songhak Yoon, Jakob Bierwagen, Matthias Trottmann, Bernhard Walfort, Nando Gartmann, Anke Weidenkaff, Hans Hagemann, Simone Pokrant,