Direct bandgap semiconductor

{
  "id": "MLC-T-CHM-003249",
  "term": "Direct bandgap semiconductor",
  "field": "Chemistry",
  "definition": "A semiconductor material in which the minimum energy of the conduction band and the maximum energy of the valence band occur at the same momentum in reciprocal space. This alignment allows electrons to transition directly from the valence band to the conduction band by emitting a photon. Gallium arsenide (GaAs) is a common direct bandgap semiconductor.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "indirect bandgap semiconductor"
  ],
  "references": [
    "PAC, 2011, 83, 931. 'Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)' on page 947 (https://doi.org/10.1351/PAC-REC-09-09-36)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/direct-bandgap-semiconductor/"
}