کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5397772 | 1505873 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Multisite luminescence of blue emitting phosphor (Sr1-xCex)3Si13Al3O2N21
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
We studied the luminescent properties of Ce3+-doped Sr3Si13Al3O2N21 phosphor. We found that Ce3+ acts as a luminescence center for blue emission by substituting Sr in the host material. Its internal quantum efficiency is larger than 0.80 under excitation by UV and near-UV light, which shows that this material is suitable for UV- and near-UV-excited white LEDs. Its broad emission spectrum is also attractive for high-color-rendering white LEDs. In order to reveal the origin of its asymmetric photoluminescence (PL) spectra, we measured photoluminescence excitation (PLE) spectra and luminescent decay curves at different monitoring wavelengths. We found that the photoluminescence properties of this material reflect the three different bands which correspond to Ce3+ occupying the three different Sr sites of the host material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 188, August 2017, Pages 342-345
Journal: Journal of Luminescence - Volume 188, August 2017, Pages 342-345
نویسندگان
Aoi Okada, Kunio Ishida, Ariane Keiko Albessard, Yasushi Hattori, Yumi Fukuda, Masahiro Kato,