Question

The immpurity atoms with which pure silicon should be doped to make a p-type semiconductor are those

• A. Boron
• B. Aluminium
• C. Phosphorus
• D. Antimony

Answer 1

Answer: (A), (B)

The correct options are
A Boron
B Aluminium

In $p$-type semiconductor, $p$ stands for positive. So there will be excess of holes or positively charged ions in $p$-type semiconductor.

Therefore the impurity atoms should be triatomic.

Among given options, Boron and aluminium are tri atomic.

Therefore the correct options are $A$ and $B.$