| p-type semiconductor | n-type semiconductor |
| 1. The impurity of some trivalent element like B, Al, In, etc. is mixed with semiconductor. | The impurity of some pentavalent element like P, As, Sb, etc. is mixed |
| 2. The impurity atom accepts one electron hence the impurities | The impurity atom donates – one electron, hence the impurities added are known as donor impurities. |
| 3. The holes are majority charge carriers and electrons are minority charge carriers. | The electrons are j majority charge carriers and holes are minority charge carriers. |
| 4. The acceptor energy level is close to the valence band and far away from conduction band. | Donor energy level is close to the conduction band and far away from valence band. |
