First principle First-principles optical properties AlN nanoribbon AlN/SiC nanoribbon BNNRs Density-functional theory Deportation Displaced Person Electronic structure F-terminated First-principle study Half-metallicity Lebensbedingungen Magnetic properties Optical properties Passivation SiC nanoribbon Silicene nanoribbons Solid State and Materials Spin-split Stadtentwicklung Ursache Vertreibung ZnO nanostructures band structure electronic properties electronic property first-principles optical property