کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1490008 992316 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of annealing on the photoluminescence of layered perovskite H1.77[Sr0.8Bi0.21Ta2O7] powders
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The effect of annealing on the photoluminescence of layered perovskite H1.77[Sr0.8Bi0.21Ta2O7] powders
چکیده انگلیسی

The microstructural and luminescent properties of H1.77[Sr0.8Bi0.21Ta2O7] powders under different dehydrating conditions were investigated. The powders were obtained by protonating Bi2SrTa2O9 powders in 3 M aqueous HCl solution, and were dehydrated by a post-annealing in air from 250 to 700 °C. The photoluminescence was enhanced for all dehydrated powders, especially for the sample annealed at 400 °C. The thermogravimetric analysis showed that there is an obvious dehydration temperature range from 200 to 400 °C, which was corresponding to the changing of the microstructure and photoluminescence in the same temperature range. The mechanism behind the experimental results was discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 46, Issue 1, January 2011, Pages 52–56
نویسندگان
, , , , ,