heterojunctiontypically
A heterojunction is an interface between two different semiconductor materials. When these distinct semiconductor materials are brought into intimate contact, their electronic properties combine to form a unique junction with characteristics different from those of either individual material. The crucial aspect of a heterojunction is the difference in their band gaps, electron affinities, and doping types. This difference in electronic properties leads to the formation of an electric field at the interface, creating a potential barrier or well that can control the flow of charge carriers.
Heterojunctions are fundamental components in many modern electronic and optoelectronic devices. One of the most common