Photoconductive detector

{
  "id": "MLC-T-CHM-008830",
  "term": "Photoconductive detector",
  "field": "Chemistry",
  "definition": "A radiation detector that operates by changing its electrical conductivity upon exposure to electromagnetic radiation. When photons strike the semiconductor material, they excite electrons into the conduction band, increasing the number of charge carriers and thus the material's conductivity. These detectors are widely used in infrared spectroscopy and imaging due to their high sensitivity in the infrared region.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "conduction band",
    "radiation detector",
    "electric potential",
    "infrared",
    "responsivity",
    "valence",
    "visible",
    "wavelength"
  ],
  "references": [
    "PAC, 1995, 67, 1745. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)' on page 1754 (https://doi.org/10.1351/pac199567101745)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/photoconductive-detector/"
}