what type of material is obtained when an intrinsic semiconductor is doped with pentavalent impurity?

When an intrinsic semiconductor (such as pure silicon) is doped with a pentavalent impurity (an element with five valence electrons like phosphorus, arsenic, or antimony), the resulting material is called an n-type semiconductor. This is because the pentavalent impurity donates extra electrons to the semiconductor, increasing the number of free electrons available for conduction. These extra electrons act as majority charge carriers, enhancing the electrical conductivity of the material. The pentavalent impurity atoms are referred to as donor atoms because they donate electrons to the conduction band. Thus, doping an intrinsic semiconductor with pentavalent impurities transforms it into an n-type extrinsic semiconductor