Role of modifier ion radius in luminescence enhancement from 5D4 level of Tb3+ ion doped alkali-alumino-telluroborate glasses

Modulated luminescence of zero-dimensional bimetallic all-inorganic halide clusters

“…S6 †). 38,39 In addition, the material stability was evaluated. Rb 8 CuIn 3 Cl 18 SCs showed good stability under ambient conditions (25 °C, 50% ± 5% relative humidity), and significant emission was observed at 482 nm after 5 h of aging (Fig.…”

Effect of Eu3+ and Tb3+ ions concentration on the mechanical, structural, and photoluminescence properties of phosphate glass fibers

“…The PL spectra show gradual increases in the intensity of the 5 D 4 level bands with the increment of Tb 3+ , while the peaks are at the same energy positions. The bands observed in the PL spectra of the 5 D 3 level are due to a low rate of non-radiative processes from 5 D 3 level to 5 D 4 level [55]. These transitions are quenched at a high Tb 3+ content when Fig.…”

New insights on the luminescence properties and Judd–Ofelt analysis of Er-doped ZnO semiconductor quantum dots

“…The absorption spectra of ZE1, ZE2, and ZE4 QDs showed 11 peaks, corresponding to the transitions from the ground level to excited levels of Er 3+ ion: It is known that the Judd-Oet (JO) theory has been widely used to evaluate the properties of ligand eld as well as optical parameters of trivalent rare earth (RE 3+ ) ions. 29,30 The key of this theory is based on the three intensity parameters U l (l = 2, 4, 6) which are usually calculated from the absorption spectra. According to the JO theory, the relationship between the oscillator strength f cal of an ED transition and U l parameters is given by the expression: 31,32…”