Epitaxy of Nanocrystalline Silicon Carbide on Si(111) at Room Temperature
2012
Silicon carbide (SiC) has unique chemical, physical, and mechanical properties. A factor strongly limiting SiC-based technologies is the high-temperature synthesis. In this work, we provide unprecedented experimental and theoretical evidence of 3C-SiC epitaxy on silicon at room temperature by using a buckminsterfullerene (C60) supersonic beam. Chemical processes, such as C60 rupture, are activated at a precursor kinetic energy of 30–35 eV, far from thermodynamic equilibrium. This result paves the way for SiC synthesis on polymers or plastics that cannot withstand high temperatures.
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