Optical properties of trivalent samarium-doped Ba5Zn4Y8O21 nanodiametric rods excitable by NUV light

Applicability of Reddish-Orange Light Emitting Samarium (III) Complexes for Biomedical and Multifunctional Optoelectronic Devices

“…Formation of complex extend the π-conjugation, hence, the intramolecular energy transfer from L to Sm 3+ increases by antenna effect, this results in broadening of excitation spectra. The peak found at 360 nm, 374 nm, 404 nm, 453 nm, 472 nm and 495 nm attributed to the electronic transitions arising from ground state 6 H 5/2 to excited state 4 F 9/2 , 4 D 5/2 , 6 P 7/2 , 4 F 5/2 + 4 I 13/2 , 4 G 7/2 , 4 I 7/2 + 4 M 15/2 in samarium (III) ions respectively [29,30] Figure 6(b) represents the three dimensional emission spectra of all S1-S6 complexes monitored at excitation wavelength (356 nm) in solid state. The luminescence spectra displays mainly three peaks at 566 nm, 606 nm and 651 nm which belongs to 4 G 5/2 → 6 H j (where j = 5/2, 7/2, 9/2) electronic transition of samarium (III) ions in all synthesized complexes respectively.…”

Structural Features of Eu3+ and Tb3+-Bipyridinedicarboxamide Complexes

“…In the UV-vis spectra of [Eu(BDCA) 2 (H 2 O)]Cl 3 and [Tb(BDCA) 2 (H 2 O)]Cl 3 (Figure 2b), a peak at 291 nm (with two shoulders at 283 and 302 nm) is observed, which corresponds to ligand-to-metal charge transfer (LMCT) (theoretical modeling of UV-vis absorption spectra is presented in Section S4.3 in the Supplementary Material, Figure S9). The UV-vis spectra of the complexes were similar to the spectral shape of the free ligand, since the π-π* state energy was probably not influenced by the coordination sphere of the metal [2,15,[24][25][26].…”

Thermally stable photoluminescence of Eu3+ doped strontium pyrophosphate: red emitting phosphor with high color purity

“…Thus, to identify phonon production during the PL emission quenching mechanism for a higher concentration of Eu 3+ ions, PL decay lifetime is plotted with respect to doping ion concentration using Auzel's fit function given by eqn (9). 13,45…”