Luminescent properties of cobalt-doped α-ZnAl2S4 spinel type single crystals

On the excitation spectra of Cr3+/Cr2+ and V3+ co-doped ZnAl2S4 single crystals

“…Synthetic α-ZnAl 2 S 4 single crystals doped with various transition metal ions such as Ti, Cr, Co or V have been the subject of investigations in our group in the past few years [1][2][3][4][5] due to their potential applications as optically active media for tunable laser systems. Unlike the crystals containing trivalent chromium, materials with other transition metal ions, especially in other oxidation states, are not easy to deal with.…”