Solutions. -The phase diagrams of the CuInS2-Sb2S3 and CuInS2-Bi2S3 systems are characterized by powder XRD and DTA. The constructed phase diagrams are used to select the composition for CuInS2 single crystal growth. Powder XRD and optical absorption spectroscopy indicate that incorporation of the solvent atoms into the crystal lattice of the obtained crystals is absent. -(ZHBANKOV*, O. Y.; OLEKSEYUK, I. D.; YURCHENKO, O. M.; PANKEVICH, V. Z.; Cryst.