Question

what is doping and types of doping?​

Answer 1

adding of impurities in ppm (parts pet million) to pure elements of group 14(Si,Ge)

p- type group 13 element (Al,Ga)are added as impurity

n-type group 15 elements (P,As)are added ad impurity

Answer 2

Doping is the process of adding impurities to intrinsic semiconductors to alter their properties. Normally Trivalent and Pentavalent elements are used to dope Silicon and Germanium. When an intrinsic semiconductor is doped with Trivalent impurity it becomes a P-Type semiconductor.