Photoluminescence properties of Eu²⁺-activated thiogallate phosphors

This work analyzes the crystal structural properties and photoluminescence properties of six Eu2+-activated thiogallates: CaGa2S4:Eu2+, SrGa2S4:Eu2+, EuGa2S4, BaGa2S4:Eu2+, Sr2Ga2S5:Eu2+, and Eu2Ga2S5. Photoluminescence parameters such as the absorption energy (E-abs), emission energy (E-em), zero-phonon line energy (E-0), Stokes shift (Delta S), and red shift (D) are discussed. This work is the first report on the photoluminescence parameters of these six Eu2+-activated thiogallates and therefore provides important information about these materials.