Question
Distinguish between intrinsic semiconductors and extrinsic semiconductors
| Intrinsic semiconductors | Extrinsic semiconductors |
| 1. A pure semiconductor is known as intrinsic semiconductors. | The semiconductor, resulting |
| 2. Their conductivity is low | Their conductivity is high even at room temperature. |
| 3. Its electrical conductivity is a function of temperature alone. | Its electrical conductivity depends upon the temperature as well as on the quantity of impurity atoms doped in the structure. |
| 4. The number density of holes $(n_h)$ is same as the number density of free electron $(n_e) (n_h = n_e).$ | The number density of free electrons and number density of holes are unequal. |
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