کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9756963 1495289 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectroscopy and upconversion of Dy3+ doped in sodium zinc phosphate glass
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Spectroscopy and upconversion of Dy3+ doped in sodium zinc phosphate glass
چکیده انگلیسی
Optical absorption and fluorescence spectra of Dy3+ doped in sodium zinc phosphate glasses have been reported. Judd-Ofelt theory has been applied to analyze the spectra and determine the optical parameters such as transition probabilities, radiative lifetime, stimulated emission cross-section, etc. The fluorescence intensity of Dy3+ corresponding to 4F9/2 → 6H13/2 transition increases with increasing concentration of Dy3+ but at higher concentrations, concentration quenching is observed. The radiative lifetime of the 4F9/2 level at 1 mol% concentration of Dy3+ in this host is found to be 541 μs. Emission corresponding to 4F9/2 → 6H13/2 transition (570 nm) is observed on excitation with NIR radiation due to upconversion. An attempt is made to explain this observation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 62, Issues 4–5, December 2005, Pages 1120-1124
نویسندگان
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