SINGLE-CRYSTALS OF CUALS2 DOPED WITH RARE-EARTH IONS

Photoluminescence spectra have been studied in CuAlS2 single crystals doped with a series of rare-earth ions grown by the chemical vapor tra nsport technique. Several sharp emissions originated from electronic t ransitions between the L-S coupling terms of 4f-shell originated multi plets have been observed for Tb3+, Tm+ and Ho3+ ions in CUAlS2 host, w hereas the spectra of Ce- and Sm-doped crystals showed no significant difference from the undoped crystals.