COMEDK · Chemistry · 12. p Block Elements (Group 13 & 14)
Silicon doped with arsenic is
- A \(p\)-type semiconductor
- B \(n\)-type semiconductor
- C intrinsic semiconductor
- D insulator
Answer & Solution
Correct Answer
(B) \(n\)-type semiconductor
Step-by-step Solution
Detailed explanation
When, Si (having 4 valence electrons) is doped with As (having 5 valence electrons), 4 electrons form covalent bonds, while the fifth electron remains free and increase conductivity. Hence, Si doped with As is \(n\)-type semiconductor.
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