Spectral overlap

{
  "id": "MLC-T-CHM-011131",
  "term": "Spectral overlap",
  "field": "Chemistry",
  "definition": "The extent to which the emission spectrum of a light-emitting chemical entity (the donor) overlaps with the absorption spectrum of another chemical entity (the acceptor). This overlap is a necessary condition for resonance energy transfer between the donor and acceptor pair. The degree of overlap is quantified by the spectral overlap integral, J(λ), which is a key parameter in the calculation of Förster resonance energy transfer (FRET) efficiency.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "Dexter excitation transfer",
    "Förster excitation transfer",
    "absorption spectrum",
    "emission spectrum",
    "energy transfer",
    "ground state",
    "molar absorption coefficient",
    "oscillator strength",
    "photon exitance",
    "radiative energy transfer",
    "order of reaction"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2275 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/spectral-overlap/"
}