Question
Write the difference between $p$-type and n-type semiconductors.
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Answer
| $p \text { - type }$ semiconductor | $n \text { - type }$ semiconductor | |
| 1. | Trivalent impurity is added in pure semiconductor. | Pentavalent impurity is added in pure semiconductor. |
| 2. | Exa. Boron, Al, In. | Exa. Phosphorous, Antimony, Arsenic etc. |
| 3. | Holes are majority charge carriers and free electrons are the minority carriers. | Free electrons are the majority charge carriers and holes are the minority carriers. |
| 4. | $n_h \gg n_e$ | $n_e \gg n_h$ |
| 5. | Electricity conduction primarily occurs due to holes. | Electricity conduction primarily occurs due to motion of electrons. |
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