Question:
why in semi conductors both electrons and holes are charge carriers but only electrons in conductors?
Answer:
Unlike conductors, the charge carriers in semiconductors arise only because of external energy (thermal agitation). It causes a certain number of valence electrons to cross the energy gap and jump into the conduction band, leaving an equal amount of unoccupied energy states, i.e. holes.
Not what you are looking for? Go ahead and submit the question, we will get back to you.
