Broadband Luminescence in Rare Earth Doped Sr(2)SiS(4): Relating Energy Levels of Ce(3+) and Eu(2+)

Sr [Formula: see text] SiS [Formula: see text]:Ce [Formula: see text] is an efficient blue-emitting (460 nm) phosphor, excitable with light of wavelengths up to 420 nm. From the excitation spectrum, we construct the energy level scheme and use it to check the predictive power of the Dorenbos model, relating the positions of the Ce [Formula: see text] energy levels with those of Eu [Formula: see text] in the same host. For strontium thiosilicate, this method gives excellent results and allows us to determine which of two available crystallographic sites is occupied by cerium. We use the Dorenbos method for extracting information on the coordination of Ce [Formula: see text] from the observed crystal field splitting.