Title :
Optical spectroscopy of borate glasses, doped with europium
Author :
Kindrat, I.I. ; Padlyak, B.V. ; Protsiuk, V.O. ; Drzewiecki, A. ; Adamiv, V.T. ; Burak, Ya.V. ; Teslyuk, I.M.
Author_Institution :
Univ. of Zielona Gora, Zielona Góra, Poland
Abstract :
The high optical quality glasses with Li2B4O7:Eu, CaB4O7:Eu, and LiCaBO3:Eu compositions containing 0.5 and 1.0 mol. % Eu2O3 have been obtained by standard glass technology. Using electron paramagnetic resonance (EPR) and optical spectroscopy it was shown that the Eu impurity is incorporated into the Li2B4O7, CaB4O7, and LiCaBO3 glasses network as Eu3+ (4f6, 7F0) ions, exclusively. All observed f - f transitions of the Eu3+ centres in optical absorption, luminescence excitation and emission spectra were identified. Luminescence kinetic shows single exponential decay with different lifetimes for Eu3+ centres in the Li2B4O7, CaB4O7, and LiCaBO3 glasses.
Keywords :
borate glasses; calcium compounds; doping; impurity states; infrared spectra; lithium compounds; paramagnetic resonance; photoluminescence; ultraviolet spectra; visible spectra; CaB4O7:Eu; EPR; Eu impurity; Eu3+ centre lifetimes; Li2B4O7:Eu; LiCaBO3:Eu; borate glasses; electron paramagnetic resonance; emission spectra; europium doping; exponential decay; f-f transitions; glass network; luminescence excitation; luminescence kinetic; optical absorption; optical spectra; standard glass technology; Heating; Eu3+ centres; borate glasses; decay kinetics; luminescence spectra; optical absorption;
Conference_Titel :
Oxide Materials for Electronic Engineering (OMEE), 2014 IEEE International Conference on
Conference_Location :
Lviv
Print_ISBN :
978-1-4799-5960-0
DOI :
10.1109/OMEE.2014.6912379
