Spectroscopy of new Sm(III) orange emitting phosphors of the type Na[Sm(SP)4], Na[Sm(WO)4] (where SP = C6H5S(O)2NP(O)(OCH3)2−; WO = CCl3C(O)NP(O)(OCH3)2−) and the polymeric materials obtained on their base
Two kind of photochemically and thermally stable Sm(III) phosphors were synthetized. The radiative transitions probabilities using Judd-Ofelt theory were analysed in absorption and emission spectra at 4.2, 77 and 293 K. The possible paths of the energy transfer are considered and mechanism of E-T was proposed.