For extrinsic semiconductors, assuming non-degenerate/moderate doping levels, we'd see both bands shift up or down (depending on the type of dopant/doping) and the Fermi level moving towards either the conduction band or valence band. The band gap stays the same, otherwise.
I think the question at around 44:00 was aiming at why does a hole have the charge of an electron but with different sign and not like charge = 0, because after all, a hole is like the absence of a charge if that makes sense?
please compare intrinsic semiconductor band diagram and extrinsic semi conductor band diagram. what happens to Ec and Ev?
For extrinsic semiconductors, assuming non-degenerate/moderate doping levels, we'd see both bands shift up or down (depending on the type of dopant/doping) and the Fermi level moving towards either the conduction band or valence band. The band gap stays the same, otherwise.
I think the question at around 44:00 was aiming at why does a hole have the charge of an electron but with different sign and not like charge = 0, because after all, a hole is like the absence of a charge if that makes sense?
Where is Silicon Carbide, dude ? ... =(
can you send me the slides please