heterojunction

noun

interface that occurs between two layers or regions of dissimilar crystalline semiconductors

Wiktionary

noun

Etymology: Etymology tree Proto-Indo-European *sem- Proto-Indo-European *sḿ̥teros Proto-Hellenic *hə́teros Ancient Greek ἕτερος (héteros)lbor. English hetero- English junction English heterojunction From hetero- + junction.

Any junction between two different semiconductors; functions as a diode