Preferred Label : light-emitting diode;
Detailed label : light-emitting diode (LED);
IUPAC acronym : OLED; PLED; LED;
IUPAC definition : semiconductor (often a combination of gallium, arsenic and phosphorous or gallium
and nitrogen) containing an i n /i region (where electrons are more numerous than
positive charges) separated from a i p /i region (where positive charges are more
numerous than negative charges). Upon application of a voltage, charges move and emission
of ultraviolet, visible or infrared radiation is produced each time a charge recombination
takes place. Although a LED emits incoherent monochromatic light, normally a very
narrow frequency range is obtained.;
Scope note : organic light-emitting devices (oleds) contain diodes made of small molecules or made
of polymeric materials. the latter are sometimes called pleds.; the colour depends on the semi-conducting material used, and can be ultraviolet, visible
or infrared.; this effect is a form of electroluminescence.;
CISMeF acronym : LED;
Origin ID : LT07414;
UMLS CUI : C1708698;
Automatic exact mappings (from CISMeF team)
- Currated CISMeF NLP mapping
- See also
- Semantic type(s)
- UMLS correspondences (same concept)
semiconductor (often a combination of gallium, arsenic and phosphorous or gallium
and nitrogen) containing an i n /i region (where electrons are more numerous than
positive charges) separated from a i p /i region (where positive charges are more
numerous than negative charges). Upon application of a voltage, charges move and emission
of ultraviolet, visible or infrared radiation is produced each time a charge recombination
takes place. Although a LED emits incoherent monochromatic light, normally a very
narrow frequency range is obtained.
https://www.anses.fr/fr/content/effets-sur-la-sant%C3%A9-humaine-et-sur-l%E2%80%99environnement-des-syst%C3%A8mes-utilisant-des-led-expertise
2019
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light-emitting diode
animals
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environmental exposure
technical report
humans
environmental health
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