کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1531143 | 1512006 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoluminescent properties of Sr2SiO4:Eu2+ phosphors prepared by solid-state reaction method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Sr2SiO4:Eu2+ phosphors were prepared by a flux method. Two emission bands at 495 nm and 560 nm were observed, which originated from Eu(I) and Eu(II) that were substituted for Sr(I) and Sr(II), respectively. The preference of Eu2+ ions for Sr(I) and Sr(II) strongly depended on the amounts of flux and firing temperatures. The increase of Eu2+ concentration led to the energy transfer from Eu(I) to Eu(II) emitting center, resulting in the red-shift, and the phase transformation from β- to α’-Sr2SiO4 were observed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 146, Issues 1–3, 15 January 2008, Pages 99–102
Journal: Materials Science and Engineering: B - Volume 146, Issues 1–3, 15 January 2008, Pages 99–102
نویسندگان
Jee Hee Lee, Young Jin Kim,