Question

With which one of the following elements silicon should be doped so as to give p-type of semiconductor?

• A. Selenium
• B. Boron
• C. Germanium
• D. Arsenic

Answer 1

The correct option is B Boron

The n-type semiconductors are obtained when $Si$ or $Ge$ are doped with elements of group 15, eg, Arsenic $\left(As\right)$, while p-type semiconductors are obtained when $Si$ or $Ge$ are doped with traces of group 13 , ie Indium $\left(In\right)$ , Boron $\left(B\right)$.

So the correct option is $B$.