کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1810619 1025566 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synergistic upconversion effect in NaYF4:Yb3+,Tm3+ nanorods under dual excitation of 980 nm and 808 nm
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Synergistic upconversion effect in NaYF4:Yb3+,Tm3+ nanorods under dual excitation of 980 nm and 808 nm
چکیده انگلیسی

NaYF4:Yb3+,Tm3+ nanorods are prepared with hydrothermal method. The upconversion luminescent properties are investigated under dual excitation of 980 nm and 808 nm. The blue emission is observed at about 475 nm under dual excitation. The intensity is 2.6 times higher than the total intensity of the two corresponding single wavelength excitations, showing a synergistic upconversion effect occurring there. The dual wavelength excitation not only effectively decreases non-radiative relaxation pumped by 980 nm but also reduces the rate of the back energy transfer from Tm3+ to Yb3+ pumped by 808 nm. The result provides a possible new way to further improve the upconversion efficiency of rare earth doped phosphor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 13, 1 July 2012, Pages 2584–2587
نویسندگان
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