Optical properties and Judd–Ofelt analysis of Sm3+ ions in Sm2O2S: Reddish-orange emission and thermal stability

Computational analysis, Urbach energy and Judd–Ofelt parameter of warm Sm3+complexes having applications in photovoltaic and display devices

“…The Ω 4 and Ω 6 parameters display the rigidity and viscosity of Sm 3+ complexes, and depend upon their dielectric properties. 58,59 A larger value of Ω 2 illustrates a lower symmetry and a greater covalence character, whereas higher Ω 4 and Ω 6 display decent rigidity in the C1–C6 complexes. Most intense peak in the emission spectra of complexes shows stark splitting due to the non-cubic symmetry, which is further supported by the Ω 2 intensity parameter.…”