We report on the effects of dopant concentration on the structural and electrical properties of In-implanted Ge. For In concentrations of ≤ 0.2 at. %, extended x-ray absorption fine structure and x-ray absorption near-edge structure measurements demonstrate that all In atoms occupy a substitutional lattice site while metallic In precipitates are apparent in transmission electron micrographs for In concentrations ≥0.6 at. %. Evidence of the formation of In-vacancy complexes deduced from extended x-ray absorption fine structure measurements is complimented by density functional theory simulations. Hall effect measurements of the conductivity, carrier density, and carrier mobility are then correlated with the substitutional In fraction
Structural and electrical properties of In-implanted Ge
High temperature and current density induced degradation of multi-layer graphene
White organic light-emitting diodes with 4 nm metal electrode
Thin film lubrication of hexadecane confined by iron and iron oxide surfaces: A crucial role of surface structure