Question
The impurity atoms with which pure silicon may be doped to make it a p-type semiconductor are those of:
- Phosphorus.
- Boron.
- Antimony.
- Aluminium.
✓
Answer
-
Boron.
-
Aluminium.
Explanation:
A p-type semiconductor is formed by doping an intrinsic semiconductor with a trivalent atom (atom having valency 3). As phosphorous and boron have three valence electrons, they can be doped with silicon to make a p-type semiconductor.
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