• BIBHU P SWAIN

      Articles written in Bulletin of Materials Science

    • Effect of nitrogen flow rate on the mechanical properties of CVD-deposited SiCN thin films

      DHRUVA KUMAR RANJAN Kr GHADAI SOHAM DAS ASHIS SHARMA BIBHU P SWAIN

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      Silicon carbonitride (SiCN) thin films were deposited on p-Si (100) substrates with different N₂ flow rates using SiC and Si₃N₄ powder precursors by chemical vapour deposition. To investigate the structural, vibrational and mechanical properties, the SiCN thin films were characterized by atomic force microscopy, Raman spectroscopy, X-ray diffraction (XRD), Fourier transform infrared and nanoindentation techniques. The XRD results reveal nanocrystals embedded with amorphous networks in the SiCN thin films. An increase in the $I$_{D}/$I$_{G} ratio with an increase in the N₂ flow rate indicated the increase of sp³ bonds in the SiCN thin film. The hardness ($H$), Young’s modulus ($E$), plasticity index ($H/E$) and ($H$³/$E$²) increase with an increase in the N₂ flow rate.

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