- #1
fk08
- 31
- 0
What does it mean if the valence band of a n-type semiconductor shifts towards lower binding energy after deposition of a metal on-top. Is it simply charge transfer from the metal towards the semiconductor or vice versa? I mean , the valence band is fully occupied, so there are no states for the electron to occupy. So a transfer from the donors towards metal makes more sense, right? that's why a charged layer (depletion) is left behind as a potential barrier for further electrons that try to go to the metal...