Question

Doping silicon with boron produces a:

• A. $n$-type semiconductor
• B. $p$-type semiconductor
• C. metallic conductor
• D. insulator

Answer 1

Answer: (B)

$p$-type semiconductor

$Si$ has 4 electrons in its valence shell while $B$ has 3 electrons in its valence shell. If Silicon is doped with boron a vacancy will be created and the semiconductor produced would be p-type semiconductor.