Double injection

{
  "id": "MLC-T-CHM-003406",
  "term": "Double injection",
  "field": "Chemistry",
  "definition": "The simultaneous entry of both electrons and holes into a device or sample, normally from two different electrodes, one supplying each carrier type. The carriers meet and recombine, which underlies light emission in organic light-emitting diodes, and the process is also used to charge electrets. It contrasts with single injection, in which only one carrier type enters and the current is limited by its space charge.",
  "synonyms": [
    "double charge carrier injection"
  ],
  "subject": "Polymer",
  "see_also": [
    "charge carrier",
    "electret",
    "hole",
    "light emitting diode"
  ],
  "references": [
    "PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 24 (https://doi.org/10.1515/pac-2020-0501)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/double-injection/"
}