کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1314598 975977 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and spectral properties of Eu3+-doped YF3 nanobundles
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis and spectral properties of Eu3+-doped YF3 nanobundles
چکیده انگلیسی

YF3:Eu3+ nanobundles were synthesized by a facile microemulsion method. Analysis of X-ray diffraction, scanning electron microscope, and transmission electron microscopy reveals that each nanobundle consists of numerous nanowhiskers with a mean length of ∼500 nm and a mean diameter of ∼2 nm. Under 393-nm excitation, the luminescence was dominated by 5D0 → 7F1 transition, indicating the inversion symmetry of Eu3+ site. The luminescence intensity increased with increasing Eu3+ concentration, up to about 30 mol%, and then decreased abruptly. The peak positions and spectral shapes of emissions were independent of Eu3+ concentration. Finally, the critical distance of energy transfer was calculated.

(a) SEM image of YF3:Eu3+(5%) nanobundles. (b) TEM image of nanobundles. (c) A crossed nanobundle; Inset: electron diffraction patterns.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fluorine Chemistry - Volume 129, Issue 7, July 2008, Pages 621–624
نویسندگان
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