SEMITIP V6, Film2, Example 4: semiconducting film on top of semiconducting substrate, contact to film, with interface states

Click here for input/output files for Example 4

As in Example 3, the contact to the film+substrate system is made to the film. Hence, as explained in Example 3, the electrostatic potential deep in the substrate approaches a value of -1 eV. However, with the high density of assumed interface states used in this example, then band bending near the interface (and extending into the vacuum) is observed.