Two compounds SiC and AlN, normally insoluble in each other below [Formula presented], are synthesized as a single-phase solid-solution thin film by molecular beam epitaxy at 750 °C. The growth of epitaxial SiCAlN films with hexagonal structure takes place on 6H-SiC(0001) substrates. Two structural models for the hexagonal SiCAlN films are constructed based on first-principles total-energy density functional theory calculations, each showing agreement with the experimental microstructures observed in cross-sectional transmission electron microscopy images. The predicted fundamental band gap is 3.2 eV for the stoichiometric SiCAlN film.
ASJC Scopus subject areas
- Physics and Astronomy(all)