Spectroscopic properties of Er3+:4I13/2 level in Bi2O3–B2O3–GeO2–Na2O glasses

Optical properties of (ZnO)0.5(P2O5)0.5 glasses doped with Gd2O3:Eu nanoparticles and Eu2O3

“…2, it can be seen that there exists a considerable overlap between the emission and excitation spectrum. In such systems, it is possible to have significant radiation trapping as reported by many authors [18,19]. Radiation trapping results in the overestimation of the quantum yield of emission as well as the excited state lifetime [18].…”

“…Radiation trapping results in the overestimation of the quantum yield of emission as well as the excited state lifetime [18]. Further, the excited state lifetime for such samples is a function of the thickness (optical path length) of the samples [18,19]. However in the present study, from the lifetime measurements carried out for glass samples with different thicknesses, it is observed that the lifetime of the excited state of the L-centre is almost same, indicating that the radiation trapping effect is quite weak in these samples.…”