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- W2012697188 abstract "The structure of a thin film deposited using tetrakis-(dimethylamino)-titanium (Ti(N(CH3)2)4) as a precursor onto a Si(100)-2 × 1 substrate at ultra-high-vacuum conditions was investigated as a function of film thickness for the films of 20 and 145 nm in the presence of surface copper and fluorine produced by in situ dosing of a common copper deposition precursor, (hexafluoroacetylacetonate)Cu(vinyltrimethylsilane), (hfac)Cu(VTMS), and a hydrogenated form of the hfac ligand, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, hfacH. A combination of surface, depth-profiling, and microscopy analytical techniques suggests that the structure of the titanium carbonitride film depends profoundly on its thickness. While the composition of the film was relatively constant throughout its whole thickness, the nanometer-scale structure changed from amorphous at the top of a 145-nm-thick film, to having a significant amount of small (∼ 5 nm) crystallites closer to the TiCN/Si interface. These studies also confirmed the absence of microfractures in the film prepared by this approach. The ex situ depth profiling investigation suggested that if (hfac)Cu(VTMS) is deposited on a TiCN-precovered silicon substrate and briefly annealed to 800 K, the film acts as a diffusion barrier for copper, while surface fluorine penetrates the film rather easily, resulting in fluorine that is distributed uniformly throughout the film." @default.
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- W2012697188 date "2007-01-01" @default.
- W2012697188 modified "2023-09-23" @default.
- W2012697188 title "Effect of film thickness and the presence of surface fluorine on the structure of a thin barrier film deposited from tetrakis-(dimethylamino)-titanium onto a Si(100)-2×1 substrate" @default.
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- W2012697188 doi "https://doi.org/10.1016/j.tsf.2006.08.046" @default.
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