Question

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

• A. As
• B. Se
• C. B
• D. Ge

Answer 1

The correct option is C B

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

Hence, the correct option is $\text{C}$