کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5438079 1398180 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and photoluminescence properties of Sr3(PO4)2:Re3+, Li+ (Re = Eu, Sm) red phosphors for white light-emitting diodes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis and photoluminescence properties of Sr3(PO4)2:Re3+, Li+ (Re = Eu, Sm) red phosphors for white light-emitting diodes
چکیده انگلیسی
Sr3(PO4)2:Re3+, Li+ (Re = Eu, Sm) red phosphors were prepared via a high temperature solid state reaction, and their structure and luminescence properties were investigated. X-ray diffraction patterns indicate that the phase of as-prepared samples is in good agreement with standard Sr3(PO4)2 structure. Under 395 nm excitation, the emission of Sr3(PO4)2:Eu3+ consists of a strong peak centered at 622 nm and two weak peaks centered at 598 nm and 660 nm, which correspond to 5D0→7F2, 5D0→7F1 and 5D0→7F3 transitions, respectively. Also, the emission spectrum of Sr3(PO4)2:Sm3+ shows three main peaks at 568 nm, 603 nm and 651 nm, which are attributed to 4G5/2→6HI/2 (I = 5, 7, 9) transitions of Sm3+. Furthermore, luminescence properties of Sr3(PO4)2:Re3+, Li+ (Re = Eu, Sm) samples are enhanced significantly by Li+ ions doping as charge compensator. Results indicate that as-prepared Sr3(PO4)2:Re3+, Li+ (Re = Eu, Sm) could be the potential red phosphors used in white light-emitting diodes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 14, 1 October 2017, Pages 11244-11249
نویسندگان
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