Simulation by ballistic deposition of local density variation and step coverage for via metallization

Abstract
The simulation is presented of ballistic deposition of sputtered metal deposited over a via. The step coverage of the film is determined and surface profiles provided at different film thicknesses. The use of a ballistic deposition technique provides additional information unattainable through the use of conventional film deposition simulations. A density profile of the film is produced and the columnar microstructure analyzed.