کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1260638 971751 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and luminescence properties of bluish-green emitting K2MgSi3O8:Eu2+ phosphor
ترجمه فارسی عنوان
سنتز و خواص لومینسانس سبز مایل به آبی انرژی K2MgSi3O8: EU2 + فسفر
کلمات کلیدی
K2MgSi3O8؛ فسفر؛ لومینسانس؛ سفید UV-LED، عناصر خاکی کمیاب
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی

Eu2+-doped K2MgSi3O8 phosphors were synthesized by conventional solid-state reaction method. The phase formation of as-prepared samples was characterized by X-ray powder diffraction. The luminescence properties were investigated by the photoluminescence excitation and emission spectra, decay curve and CIE coordinates. The phosphor showed bluish-green emission centered at 460 nm under the excitation of UV and near UV light with the wavelength range of 250–430 nm. Two Eu2+ emission centers existed in the K2MgSi3O8:Eu2+ phosphor according to the luminescence spectra and the decay curves. The critical quenching concentration of Eu2+ doping was determined to be 3.0 mol.% and the concentration quenching mechanism was dipole-dipole interactions between Eu2+ ions. These results suggested that K2MgSi3O8:Eu2+ was a potential bluish-green phosphor candidate for white UV-LED.

Graphical AbstractEmission spectra of K2MgSi3O8:xEu2+ phosphors with varying Eu2+ contents and the inset shows the emission intensity as a function of the Eu2+ contentFigure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 34, Issue 1, January 2016, Pages 17–20
نویسندگان
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