Published online by Cambridge University Press: 21 February 2011
A liquid methylsilazane compound, [CH3 SiHNH]n, was used, with H2, NH3, and a 60%/40% mixture of NH3/H2, to deposit silicon-based ceramic films in a CVD reactor at 873–1073 K. Characterization of the films by ellipsometry, Fourier transform infrared spectrometry (FTIR) and Auger electron spectrometry (AES) showed that the methylsilazane was pyrolyzed to form silicon carbonitride in H2, and silicon nitride in both NH3 and NH3 /H2, with the incorporation of appreciable amounts of oxygen. The deposition rate increases and the activation energy decreases in order from NH3-, NH3 /H2-, and H2-[CH3SiHNH]n gas mixtures. The temperature dependence of the structural density of the films increases in the same order.