Understanding Eu3+ emission spectra in glass

Abstract

The emission spectra of the tripositive lanthanide ion Eu(3+) have often been employed to probe its environment in the solid state, and the intensity ratio of magnetic dipole ((5)D(0)-->(7)F(1)) and forced electric dipole ((5)D(0)-->(7)F(2)) transitions has been used to estimate the "degree of asymmetry" of a crystal site. From the site-selective, low temperature emission spectra of Eu(3+) doped into a glass, a new empirical relation has been found between the width of spectral features and the relative intensity of the (5)D(0)-->(7)F(0) zero phonon line. In order to explain the observations from experiments with excitation at different wavelengths, a generic quantitative relation has been developed from basic theory and validated from our experimental results. This work gives a deeper insight and understanding of the spectral characteristics of Eu(3+) electronic spectra in the visible region.

Spectroscopic and crystal-field analysis of energy levels of Eu3+ in SnO2 in comparison with ZrO2 and TiO2

“…These wave functions obtained with taking into account the J-mixing effects can be readily used for the intensity calculation of the 5 D 0 → 7 F 0 and 5 D 0 → 7 F 3 transitions, as shown in Ref. [21]. It is instructive to estimate numerically, how strong such a mixture can be.…”

Site selective spectroscopic study of an efficient red-emitting phosphor Y2MoO6:Eu

“…The 5 D 0 ? 7 F 1 transition is magnetic dipole allowed, and its intensity is generally accepted to be fairly constant for Eu 3+ in different crystal field [23]. While the 5 D 0 ?…”

Glass composition and excitation wavelength dependence of the luminescence of Eu3+ doped lead borate glass

“…30 From the spectra recorded using different excitation lines, a new empirical relation was uncovered between the width of spectral features and the relative intensity of the 5 D 0 ! 7 F 0 transition.…”