Germanium is doped with one of the following element to obtain an n-type semiconductor. What is the element used for doping?

Question

Germanium is doped with one of the following element to obtain an n-type semiconductor. What is the element used for doping? (A) Gallium (B) Arsenic (C) Aluminium (D) Boron

Tardigrade Admin · Accepted Answer

Germanium belongs to group 14 of periodic table and have 4 valence electrons when doped with a group 15 elements like As or P form n -type semiconductors due to presence of an extra valence electron.

Q. Germanium is doped with one of the following element to obtain an $n - t y p e$ semiconductor. What is the element used for doping?

Gallium

Arsenic

Aluminium

Boron

Germanium belongs to group $14$ of periodic table and have $4$ valence electrons when doped with a group $15$ elements like As or $P$ form $n$ -type semiconductors due to presence of an extra valence electron.

Q. Germanium is doped with one of the following element to obtain an n−type semiconductor. What is the element used for doping?