Interface between dissimilar crystalline or amorphous solid phases that have unequal bandgap levels.
Note: Heterojunction allows efficient dissociation of
charge carriers, which is utilized, e.g., in diode lasers, heterojunction bipolar transistors and high electron mobility transistors.
See also: homojunction
Source:
PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 34 (https://doi.org/10.1515/pac-2020-0501)