Luminescence

{
  "id": "MLC-T-CHM-006806",
  "term": "Luminescence",
  "field": "Chemistry",
  "definition": "The emission of light by a substance not resulting from heat, but rather from chemical reactions, electrical energy, or absorption of radiation. This process involves the excitation of electrons to higher energy states, followed by their return to lower states with the emission of photons. Examples include fluorescence and phosphorescence.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "spontaneous emission",
    "bioluminescence",
    "chemiluminescence",
    "electrogenerated chemiluminescence",
    "fluorescence",
    "phosphorescence",
    "photoluminescence",
    "radioluminescence",
    "sonoluminescence",
    "thermoluminescence",
    "triboluminescence"
  ],
  "references": [
    "PAC, 1994, 66, 2513. 'Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)' on page 2522 (https://doi.org/10.1351/pac199466122513)",
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2252 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/luminescence/"
}