Semiconductor Physics Unit 2

Front

DEFINITION FOR DOPING

Back

DOPING

The method of adding impurities to a pure

semiconductor is known as DOPING, and the impurity added

is called the doping agent (e.g., Ar, Sb, P, Ge, and Al).

Front

N – type semiconductor

When penta-valent impurity is added to the intrinsic semiconductors, n type semi conductors are formed When small amounts of penta-valent impurity such as phosphorous are added during crystal formation, the impurity

atoms lock into the crystal lattice

Back

Front

DEFINITION FOR SEMICONDUCTOR

Back

SEMICONDUCTOR

A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator. Common semiconductors include silicon and germanium.

Front

APPLICATION OF DOPING IN SEMICONDUCTORS

Back

APPLICATION OF DOPING

Doping is used to enhance the electrical properties of semiconductors, allowing them to conduct electricity more effectively and enabling the creation of p-type and n-type materials.

Front

EXAMPLES OF DOPING AGENTS

Back

DOPING AGENTS

Common doping agents include phosphorus (P) for n-type semiconductors and boron (B) for p-type semiconductors, which modify the electrical characteristics of the base material.