Abstract
Zinc and cadmium complexes of 1,1,5,5-tetraalkyl-2-4-dithiobiurets [M(N(SCNR2)2)2] [M = Zn, R = methy (1), ethyl (2) and M = Cd, R = methyl (4), ethyl (5)] and 1,1,5,5-tetraalkyl-2-thiobiurets [M(SON(CNR2)2)2] [M = Zn, R = isopropyl (3) and M = Cd, R = isopropyl (6)] have been synthesized. The single crystal X-ray structures of complexes (2), (3), (4), and (5) were determined. Thermogravimetric analysis confirmed that all six complexes decomposed in a single step to their corresponding metal sulfides. The complexes were used as single source precursors for the deposition of zinc sulfide (ZnS), cadmium sulfide (CdS), and zinc cadmium sulfide (ZnxCd1−xS) thin films by aerosol assisted chemical vapor deposition (AACVD). The zinc complexes (1) and (3) deposited cubic ZnS films with small rods and granular crystallites at 300 and 350 °C, whereas at 400 and 450 °C hexagonal ZnS with granular crystallites were dominant. Complex (2) gave granular hexagonal ZnS films at all deposition temperatures. Cadmium complex...
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