Semiconductor

SemiconductorSemiconductor

Describe semiconductor in terms of Describe semiconductor in terms of resistance and free electronsresistance and free electrons

Describe n-type and p-type Describe n-type and p-type semiconductors.semiconductors.

Describe semiconductor diodes.Describe semiconductor diodes. Describe the function of diodes.Describe the function of diodes. Describe the use of diodes as rectifiers.Describe the use of diodes as rectifiers. Describe the use of capacitor. Describe the use of capacitor.

Semiconductors are materials which conduct electricity better than insulator, but no so well as ordinary conductors.

•The conductivity of the semiconductors can be increased by a process is called “doping”

•Doping is a process of adding a small amount of impurities into the pure crystal of semiconductor (intrinsic semiconductor).•Atoms of the impurities added should have almost the same size as the atoms of the intrinsic semiconductor.