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Silicon carbide (SiC) is a wide bandgap material with the potential for high-power and high-temperature electronics. Nowadays, the most efficient manufacturing process is Chemical Vapor Deposition (CVD) at a temperature of about 1900K. The performance of SiC devices is limited by the material quality of SiC substrates and their epitaxial structures, which depend highly on the processing conditions. In the present study, the quantitative relationship between heat and mass transfer in the hot wall CVD reactor and the epitaxial growth of SiC is addressed. Epitaxial growth means crystal growth that progresses while inheriting the laminar structure and the orientation of substrate crystals. From a technological point of view, it is important to cover the wafer with a thin film of homogeneous thickness. Since there are many parameters that influence a reaction on the crystal area, such as temperature, pressure, gas flow, reactor geometry, it is difficult to design the optimal process. According to the fact that it is impossible to experimentally determine the exact distribution of heat and mass transfer inside the reactor during the crystal growth, modeling is the only solution to understanding the process precisely. Numerical simulations allow us to understand the process by calculation of heat and mass transfer distribution during the epitaxial growth of SiC. The reactor walls are induction heated during the growth process. Gases are introduced to the reactor at WIT Transactions on Engineering Sciences, Vol 91, www.witpress.com, ISSN 1743-3533 (on-line) © 2015 WIT Press doi:10.2495/SECM150191 Surface and Contact Mechanics including Tribology XII 213

Modeling of heat and mass transfer in an SiC CVD reactor as a tool to design modern materials for high power electronics applications