Question

Difference between homojunction and heterojunction

Answer 1

Junctions between differently doped regions of the same semiconductor material are called a homojunction, while a junction between two different types of materials is called a heterojunction.

Answer 2

A heterojunction is an interface that befalls within two layers or regions of different crystalline semiconductors. These semiconducting materials have irregular band gaps.

A homo-junction is a semiconductor interface that befalls within layers of alike semiconductor material. These materials have similar band gaps but typically have unusual doping.