Quantum efficiency

{
  "id": "MLC-T-CHM-009762",
  "term": "Quantum efficiency",
  "field": "Chemistry",
  "definition": "The number of events of a specified kind, such as molecules reacting or photons emitted, divided by the number of photons absorbed by the system; for a primary photochemical process it equals the quantum yield. In detectors and photovoltaic devices, external quantum efficiency instead uses the photons incident on the device as the denominator, and a value of 1 means one electron per photon.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "efficiency",
    "quantum yield"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2267 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/quantum-efficiency/"
}