Question

To get $n-$type of semiconductor, germanium should be doped with:

• A. galium
• B. arsenic
• C. aluminium
• D. boron

Answer 1

The correct option is B arsenic

For germanium to be a N- type semiconductor, it should be doped with group 15 elements. This will lead to excess of electrons.

In the given options, only element which belongs to group 15 is Arsenic.

So, option $B$ is correct answer.