کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1488656 1510726 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solid-state reaction preparation and photoluminescence properties of Na2Ba6(Si2O7)(SiO4)2:Eu2+ phosphors
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Solid-state reaction preparation and photoluminescence properties of Na2Ba6(Si2O7)(SiO4)2:Eu2+ phosphors
چکیده انگلیسی


• Green-emitting phosphor powder Na2Ba6(Si2O7)(SiO4)2:Eu2+ was synthesized.
• Two different emission centers occupied by Eu2+ were investigated.
• The concentration quenching mechanism was studied.

A kind of novel green-emitting phosphor Na2Ba6(Si2O7)(SiO4)2:Eu2+ was synthesized by a solid-state reaction. The phase formation of as-prepared sample was investigated by X-ray powder diffraction. The photoluminescence emission (PL) and excitation (PLE) spectra results indicated that the phosphor could be efficiently excited by ultraviolet (UV) light from 240 to 400 nm, and presented a broad green emission band with two-band profile suggesting two different emission centers occupied by Eu2+. The critical quenching concentration of Eu2+ was determined to be 0.01 mol and the concentration quenching mechanism was also investigated.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 49, January 2014, Pages 589–592
نویسندگان
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