12/16/2023 0 Comments N type transistorIn an n-type semiconductor, the donor energy level is close to the conduction band and away from the valence band.The electron density is much greater than the hole density in the n-type semiconductor denoted as n e > n h whereas, in p-type semiconductor the hole density is much greater than the electron density n h > n e.In the n-type semiconductor, electrons are majority carriers, and holes are minority carriers. In a p-type semiconductor, the majority carriers are holes, and the minority carriers are electrons.The impurity added in p-type semiconductor provides extra holes known as Acceptor atom, whereas in n-type semiconductor impurity provides extra electrons and termed as Donor atom.Trivalent impurity like Aluminium, Gallium, and Indium is added in the p-type semiconductor, while in the n-type semiconductor Pentavalent impurity like Arsenic, Antimony, Phosphorus, Bismuth, etc.In a p-type semiconductor, the III group element of the periodic table is added as a doping element, whereas in n-type the V group element is the doping element.Similarly, when a Pentavalent impurity is added to the pure semiconductor n-type semiconductor is obtained.ĭifference Between p-Type and n-Type Semiconductor The p-type semiconductor is formed when the Trivalent impurity is added to the pure semiconductor. Majority carriers move from lower to higher potential. Majority carriers move from higher to lower potential. The donor energy level is close to the conduction band and away from the valence band.įermi level lies between acceptor energy level and the valence band.įermi level lies between donor energy level and the conduction band. The acceptor energy level is close to the valence band and away from the conduction band. The electron density is much greater than the hole density. The hole density is much greater than the electron density. Pentavalent impurity like P, As, Sb, Bi etc. Impurity added provides extra electrons and is known as Donor Atom. Impurity added creates vacancy of electrons (holes) called as Acceptor Atom. In n type semiconductor V group element is added as doping element. In P type semiconductor III group element is added as doping element. The difference between a p-type semiconductor and an n-type semiconductor is given below in the tabulated form.
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