MCQ
$p$ and $n-$type of semiconductors are formed due to
- ✓Covalent bonds
- BMetallic bonds
- CIonic bonds
- DCo-ordinate bond
✓
Answer
Correct option: A.
Covalent bonds
a
Pentavalent impurities Impurity atoms with $5$ valence electrons produce $n-$ type semiconductors by contributing extra electrons. Trivalentimpurities Impurity atoms with $3$ valence electrons produce $p$ - type semiconductors by producing a "hole" or electron deficiency. The trivalent and pantavalent atoms need an additional electron to form covalent bonds.
Pentavalent impurities Impurity atoms with $5$ valence electrons produce $n-$ type semiconductors by contributing extra electrons. Trivalentimpurities Impurity atoms with $3$ valence electrons produce $p$ - type semiconductors by producing a "hole" or electron deficiency. The trivalent and pantavalent atoms need an additional electron to form covalent bonds.
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