Difference Between N-type Semiconductor and P- type semiconductor
| n-Type Semiconductors | p-Type Semiconductors |
|---|---|
| 1. When pentavalent impurity atoms like As, Sb etc. are added in the intrinsic semiconductor, we get n-type semiconductor. | 1. When trivalent impurity atoms like gallium, indium etc. are added in the intrinsic semiconductor, we get p-type semiconductor. |
| 2. The majority carriers in n-type semiconductor are electrons and minority carriers are holes. | 2. The majority carriers in p-type semiconductor are holes and minority carriers are electrons. |
| 3. $n_e >> n_h$ | 3. $n_h >> n_e$ |
| 4. Donor energy level lies close to conduction band. | 4. Acceptor energy level lies close to the valence band. |
| 5. Conductivity of a n-type semiconductor $\sigma_n = eN_D \mu_e$ where $N_D$ is number density of donor atom. | 5. Conductivity of p-type semiconductor $\sigma_p = eN_D \mu_h$ where $N_A$ is number density of acceptor atom. |