کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8161069 | 1525114 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on photoluminescence and energy transfer of Eu3+/Sm3+ single-doped and co-doped BaB8O13 phosphors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A series of Sm3+, Eu3+ and Eu3+- Sm3+ doped BaB8O13 were synthesized by using a solution combustion method. When excited at 394Â nm, BaB8O13: Eu3+ emits red light, and the strongest peak was located at 614Â nm, which is attributed to the 5D0â7F2 transition of Eu3+. BaB8O13: Sm3+ produced red-orange light, and the major emission peak was located at 596Â nm under the 402Â nm radiation excitation, which is assigned to the 4G5/2â6H7/2 transition of Sm3+. When excited at 402Â nm, the PL emission intensity from BaB8O13: 0.05Eu3+; 0.005Sm3+ at 614Â nm was enhanced considerably compared to that of the sample without Sm3+, suggesting that energy was transferred from Sm3+ to Eu3+. The Commission International de Iâ²Eclairage (CIE) chromaticity coordinates of BaB8O13: 0.05Eu3+; 0.005Sm3+ powder phosphor (0.637, 0.362) are located in the red region indicating that the phosphor can serve as a source of red light in LEDs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 535, 15 April 2018, Pages 89-95
Journal: Physica B: Condensed Matter - Volume 535, 15 April 2018, Pages 89-95
نویسندگان
Mantwa A. Lephoto, Kamohelo G. Tshabalala, Selepe J. Motloung, Iorkyaa Ahemen, Odireleng M. Ntwaeaborwa,