The energy needed for electron to become free from the surface of metal with zero velocity is called as
What enables Ge behave as semiconductor even though all electrons in the valence band form covalent bonds? It is due to the small width of
From the surface of metal, the free electrons can- not come out because
An n-type and a p-type silicon can be obtained by doping pure silicon with
What is the resistivity of a pure semiconductor at absolute zero?
An N-type semiconductor is
In an N-type semiconductor, donor valence band is
In a P type semiconductor, the acceptor valence band is
Work function of a metal depends upon
