کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1463760 989651 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and photoluminescence properties of the high-brightness Eu3+-doped Sr3Y(PO4)3 red phosphors
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Synthesis and photoluminescence properties of the high-brightness Eu3+-doped Sr3Y(PO4)3 red phosphors
چکیده انگلیسی

A series of red-emitting phosphors Eu3+-doped Sr3Y(PO4)3 have been successfully synthesized by conventional solid-state reaction, and its photoluminescence properties have been investigated. The excitation spectra reveal strong excitation bands at 392 nm, which match well with the popular emissions from near-UV light-emitting diode chips. The emission spectra of Sr3Y(PO4)3:Eu3+ phosphors exhibit peaks associated with the 5D0 → 7FJ (J = 0, 1, 2, 3, 4) transitions of Eu3+ and have dominating emission peak at 612 nm under 392 nm excitation. The integral intensity of the emission spectra of Sr3Y0.94(PO4)3:0.06Eu3+ phosphors excited at 392 nm is about 3.4 times higher than that of Y2O3:Eu3+ commercial red phosphor. The Commission Internationale de l’Eclairage chromaticity coordinates, the quantum efficiencies and decay times of the phosphors excited under 392 nm are also investigated. The experimental results indicate that the Eu3+-doped Sr3Y(PO4)3 phosphors are promising red-emitting phosphors pumped by near-UV light.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 38, Issue 6, August 2012, Pages 4895–4900
نویسندگان
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