gallium arsenide
E246070
Gallium arsenide is a compound semiconductor material known for its high electron mobility and direct bandgap, widely used in high-frequency and optoelectronic devices such as microwave integrated circuits, LEDs, and laser diodes.
All labels observed (1)
| Label | Occurrences |
|---|---|
| gallium arsenide canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2225446 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: gallium arsenide Context triple: [MMIC, typicalSubstrate, gallium arsenide]
-
A.
Esaki diode
The Esaki diode is a heavily doped semiconductor tunnel diode that exhibits negative differential resistance, enabling high-speed and microwave-frequency electronic applications.
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B.
Nanocnide
Nanocnide is a little-known genus of flowering plants in the hemp family Cannabaceae, likely comprising herbaceous species related to nettles and hops.
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C.
Shockley Semiconductor Laboratory
Shockley Semiconductor Laboratory was a pioneering Silicon Valley research and development company founded by Nobel laureate William Shockley that became the seed for many later semiconductor firms, including those started by the "traitorous eight."
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D.
ARM Copper
ARM Copper is the copper-focused mining division of South African diversified mining company African Rainbow Minerals.
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E.
MMICs
MMICs (Monolithic Microwave Integrated Circuits) are compact, high-frequency integrated circuits used in microwave and millimeter-wave applications such as radar, satellite communications, and wireless systems.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: gallium arsenide Target entity description: Gallium arsenide is a compound semiconductor material known for its high electron mobility and direct bandgap, widely used in high-frequency and optoelectronic devices such as microwave integrated circuits, LEDs, and laser diodes.
-
A.
Esaki diode
The Esaki diode is a heavily doped semiconductor tunnel diode that exhibits negative differential resistance, enabling high-speed and microwave-frequency electronic applications.
-
B.
Nanocnide
Nanocnide is a little-known genus of flowering plants in the hemp family Cannabaceae, likely comprising herbaceous species related to nettles and hops.
-
C.
Shockley Semiconductor Laboratory
Shockley Semiconductor Laboratory was a pioneering Silicon Valley research and development company founded by Nobel laureate William Shockley that became the seed for many later semiconductor firms, including those started by the "traitorous eight."
-
D.
ARM Copper
ARM Copper is the copper-focused mining division of South African diversified mining company African Rainbow Minerals.
-
E.
MMICs
MMICs (Monolithic Microwave Integrated Circuits) are compact, high-frequency integrated circuits used in microwave and millimeter-wave applications such as radar, satellite communications, and wireless systems.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
III-V semiconductor
ⓘ
compound semiconductor ⓘ inorganic compound ⓘ |
| bandGapEnergyAt300K | about 1.42 eV ⓘ |
| bandGapType | direct bandgap ⓘ |
| chemicalFormula | GaAs ⓘ |
| containsElement |
arsenic
ⓘ
gallium ⓘ |
| crystalStructure | zinc blende ⓘ |
| electronMobility | higher than silicon ⓘ |
| growthMethod |
liquid encapsulated Czochralski method
ⓘ
metal-organic chemical vapor deposition ⓘ molecular beam epitaxy ⓘ |
| hasProperty |
can be grown epitaxially
ⓘ
direct optical transitions ⓘ good radiation resistance ⓘ high electron mobility ⓘ high resistivity semi-insulating substrates available ⓘ high saturation electron velocity ⓘ higher breakdown voltage than silicon in some device structures ⓘ higher electron mobility than silicon ⓘ |
| latticeConstant | about 5.65 Å ⓘ |
| meltingPoint | about 1238 °C ⓘ |
| safetyConcern | requires control of arsenic exposure during processing ⓘ |
| thermalConductivity | lower than silicon ⓘ |
| toxicComponent | arsenic-containing dust and fumes ⓘ |
| usedAs |
material for high-speed digital ICs
ⓘ
material for optoelectronic detectors ⓘ material for optoelectronic emitters ⓘ substrate for III-V epitaxial layers ⓘ |
| usedIn |
heterojunction bipolar transistors
ⓘ
high-efficiency space solar cells ⓘ high-electron-mobility transistors ⓘ high-frequency electronics ⓘ infrared LEDs ⓘ laser diodes ⓘ light-emitting diodes ⓘ microwave integrated circuits ⓘ microwave power amplifiers ⓘ monolithic microwave integrated circuits ⓘ optical communication components ⓘ optoelectronic devices ⓘ photodetectors ⓘ radar systems ⓘ radio-frequency devices ⓘ satellite communications equipment ⓘ solar cells ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: gallium arsenide Description of subject: Gallium arsenide is a compound semiconductor material known for its high electron mobility and direct bandgap, widely used in high-frequency and optoelectronic devices such as microwave integrated circuits, LEDs, and laser diodes.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
MMIC