Aerosol-assisted chemical vapor deposition of MoS from solutions containing the single-source precursors -Mo(CO)(TMTU) and Mo(CO)(TMTU) in toluene was compared to depositions from the coreactant solution containing Mo(CO) and uncoordinated TMTU in toluene. The results were used to assess the significance of ligand precoordination on the properties of the deposited films. Raman spectra and GI-XRD patterns of the films show that the single-source precursors produced more intense and sharper signals for 2H-MoS as compared to the coreactant system of Mo(CO) and TMTU, which is indicative of improved crystallinity. SEM and XPS were also used to assess morphology and film composition. Thermolysis of -Mo(CO)(TMTU) and analysis of the pyrolysis products by GC-MS and H NMR suggested a decomposition mechanism of the TMTU ligand where a terminal sulfido is generated on the molybdenum center with loss of a heteroatom stabilized carbene.
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