Charge-transfer exciton

{
  "id": "MLC-T-CHM-001918",
  "term": "Charge-transfer exciton",
  "field": "Chemistry",
  "definition": "An excited state in a polymer where an electron and a hole are bound together but are localized on different molecular units or segments of the polymer chain. This separation of charge gives the exciton a dipole moment. Such excitons are often formed at the interface between donor and acceptor materials in organic photovoltaics.",
  "subject": "Polymer",
  "references": [
    "PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 19 (https://doi.org/10.1515/pac-2020-0501)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/charge-transfer-exciton/"
}