Random movement of an exciton from one molecular entity to another or from one part of a molecular entity or a
lattice to another part of the same kind.
Source:
PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 31 (https://doi.org/10.1515/pac-2020-0501)