CVD Process

Thermal Low Pressure Chemical Vapor Deposition (TLPCVD) is a method of depositing thin films on a substrate surface through a thermally activated chemical reaction between one or more reactive gases and the substrate. This deposition technique is used for the deposition of silicon, silicon dioxide, silicon nitride and for the production of carbon nanotubes and graphene. In thermal CVD process, the precursor gas molecules are introduced into a heated chamber in vacuum atmosphere, reacting with the substrate surface at high temperatures, depositing a thin film of the desired material onto the substrate. The substrate is heated to provide the energy needed for precursor reaction and/or decomposition, because the high temperature enables the gas to react with the substrate, improving crystallinity and density of the thin film