کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1229177 1495227 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical transitions of Ho3+ in oxyfluoride glasses and upconversion luminescence of Ho3+/Yb3+-codoped oxyfluoride glasses
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Optical transitions of Ho3+ in oxyfluoride glasses and upconversion luminescence of Ho3+/Yb3+-codoped oxyfluoride glasses
چکیده انگلیسی


• Ho3+-singly doped and Ho3+/Yb3+-codoped SiO2–BaF2–ZnF2 glasses were prepared.
• Judd–Ofelt analysis indicated the glass structure changed with change of glass composition.
• The intensity of upconversion luminescence decreased with increasing ZnF2 content.

Optical properties of Ho3+-doped SiO2–BaF2–ZnF2 glasses have been investigated on the basis of the Judd–Ofelt theory. Judd–Ofelt intensity parameters, radiative transition probabilities, fluorescence branching ratios and radiative lifetimes have been calculated for different glass compositions. Upconversion emissions were observed in Ho3+/Yb3+-codoped SiO2–BaF2–ZnF2 glasses under 980 nm excitation. The effects of composition, concentration of the doping ions, and excitation pump power on the upconversion emissions were also systematically studied.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 142, 5 May 2015, Pages 232–238
نویسندگان
, ,