MCQ
The impurity atoms with which pure silicon may be doped to make it a $p-$type semiconductor are those of:
- APhosphorus.
- BBoron.
- CAluminium.
- ✓Both $B$ and $C$
✓
Answer
Correct option: D.
Both $B$ and $C$
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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