... Laboratories: . Inorganic Materials Sciences . Chemistry of Coordination Compounds . Diagnostics of Inorganic Materials . ... Materials: doped narrow band-gap A4B6 and wide band-gap A2B6 crystals and films for optoelectoronics . ... Analysis (chemical composition) and real structure study are carried out by Auger spectroscopy, Electron microprobe analysis, Spattered Neutral Mass-Spectroscopy, Electron microscopy, X-ray difractometry and by selective chemical etching. ...