Effects of diverse metal adsorptions on the electronic and optical properties of the β-Si3N4 (2 0 0) surface: A first-principles study

We study electronic structures and optical properties, especially absorption and reflectivity spectra, dielectric constant and loss function of Li, Na, K, Be, Mg, Ca and Al adsorption behaviors on (2 0 0) surface of hexagonal silicon nitride (β-Si3N4).