Consider a block of negatively doped semiconductor connected to a large section of metal wire.
(I am assuming a negatively doped semiconductor for specificity, while implying a similar, though reverse, effect with a positively doped block.)
- Is it correct to think that the electron gas pressure in the semiconductor is somewhat elevated and, therefore, given an opportunity, electrons would tend to rather leave than enter, thus creating a slight positive electric charge in the semiconductor and a slight negative charge in the surrounding wiring?
- Would the same effect persist in a circuit if electric current is flowing through the semiconductor block?
- Assuming such effect does manifest, how would it be quantitatively estimated?