کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10633482 993036 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Energy transfer studies in Eu3+-doped lead-niobium-germanate glasses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Energy transfer studies in Eu3+-doped lead-niobium-germanate glasses
چکیده انگلیسی
The spectral migration of energy among Eu3+ ions in lead-niobium-germanate glass (60GeO2-25PbO-15Nb2O5) with different Eu3+ concentrations (0.5, 1, 3, and 5 mol%) has been investigated at low temperature by using time-resolved fluorescence line narrowing (TRFLN) spectroscopy. The spectral features of the time-resolved fluorescence line-narrowed 5D0 → 7F0 emission spectra under resonant excitation at different wavelengths along the 7F0 → 5D0 transition as a function of time, excitation wavelength, and concentration reveal the existence of energy migration between discrete regions of the inhomogeneous broadened spectral profile. The analysis of the time evolution of the 5D0 → 7F0 emission shows that the electronic mechanism responsible for the ion-ion interaction can be identified as a dipole-dipole energy transfer process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 27, Issue 11, October 2005, Pages 1776-1780
نویسندگان
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