Electron-lattice coupling parameters and oscillator strengths of cerium-doped lutetium oxyorthosilicate

Luminescent properties and reduced dimensional behavior of hydrothermally prepared Y2SiO5:Ce nanophosphors

“…This approach provides a straightforward method for measuring oscillator strengths of optical transi- tions in nanophosphors. Accordingly, we extracted f ij from the experimentally determined slope; the value is 0.013, which is ϳ50% greater than the bulk value 8 and is consistent with enhanced light output as observed in this work. Finally, we note that although a solvent of index 1.82 was unavailable, extrapolation of the data in Fig.…”

Luminescence and energy transfer processes in Lu2SiO5:Ce3+ scintillator

“…The possibility of substitutional and interstitial occupation by Ce ions was proposed by Naud et al [7] based on the fact that the spin-orbit splitting of the Ce 3+ 4f ground state was found in the Ce1 emission spectra, while no such splitting can be observed in the Ce2 emission spectra even in low temperature. While Cooke et al [8] provided new evidence to support the model proposed by Suzuki et al [9] that the two centers as substitutional sites rather than one substitutional and one interstitial.…”

Impact of Lu/Gd ratio and activator concentration on structure and scintillation properties of LGSO:Ce crystals

“…Luminescence centre Ce2 (CeO 6 polyhedron) shows decay time of 50-60 ns and peak around 450-520 nm [26]. It was demonstrated [27,28] that simultaneous presence of Ce 3 + ions in Ce1 and Ce2 sites in LSO substantially lowers light yield, increases decay time and shifts luminescence peak maximum to larger wavelengths. In accordance with [28], this effect is caused by energy transfer from Ce1 to Ce2 centre, which can be minimized through decreasing the concentration of Ce2 centers or increasing the average distance between the two centers.…”