On Doping Ge Metal?

When we add some of In or Ga (group 13 element) into Ge (group number 14 elements), then electron vacancy is created which is called holes. In this type of semiconductor the charge carrier are holes (positive), so it is called p-type semiconductor.

What happens when Ge is doped with Ga?

From doping an atom of Ga to 6 atoms into the Ge crystal, the Fermi energy is increase, however the binding energy is reduced. This reduction caused the compound to be more loosely bound and it can be easily displace the Ga from its position.

What type of semiconductor is formed when Ge is doped with Ga?

when a 14th group element(Ge) is doped with 13th group element(Ga) , a p -type semi conductor is formed.