" Why conductivity of silicon increases on doping with phosphorus "

Why does the conductivity of silicon increase upon doping with phosphorus ?

Why does the conductivity of silicon increase upon doping with phosphorus ?

Account for the following: Conductivity of silicon increases on doping it with phosphorus.

Account for the following : (i) Schottky defects lower the density of related solids. (ii) Conductivity of silicon increases on doping it with phosphorus.

Account for the following: (i) schottky defects lower the density of related solids. (ii) Conductivity off silicon increases on doping it with phosphorus.

Account for the following : (i) Schottky defects lower the density of related solids. (ii) Conductivity of silicon increases on doping it with phosphorus.

Account for the following : (i) Schottky defects lower the density of related solids. (ii) Conductivity of silicon increases on doping it with phosphorus.

Assertion : Conductivity of silicon increases by doping it with group-15 elements. Reason : Doping means introduction of small amount of impurities like P, As or Bi into the pure crystal.