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The 45 pages that link to Light-emitting diode, each with the reason it gives.

• SemiconductorBroader topic: Electron-hole recombination in semiconductor junctions produces its light.

• Band gapRelated: The photon energy is linked to the semiconductor’s band-gap energy.

• LaserCompared with: LEDs are efficient light sources but generally lack the narrow beam and coherence of lasers.

• Doping (semiconductors)Related: Dopant profiles help establish the carrier injection and active regions in many LEDs.

• P–n junctionBroader topic: Its forward-biased junction drives the carrier recombination that produces light.

• ExcitonRelated: Radiative exciton formation and decay can produce its emitted light.

• Gallium arsenideRelated: GaAs-based alloys provide efficient infrared emission in LEDs.

• Color rendering indexRelated: LED spectra vary widely, so CRI helps compare their color rendition.

• Radiant intensityBroader topic: Its angular radiant-intensity profile helps characterize optical output.

• Electric circuitRelated: An LED circuit converts electrical input into visible light.

• Electron–hole pairRelated: Radiative recombination of injected pairs produces its photons.

• University of Illinois Urbana-ChampaignNarrower topic: Holonyak’s Illinois work produced the first practical visible LED.

• Band theoryRelated: Electron transitions across its band structure release photons with characteristic energies.

• DiodeBroader topic: It turns diode current directly into visible or infrared light.

• Quantum wellRelated: Quantum wells can confine carriers in an LED’s emitting region, improving control over recombination.

• ElectroluminescenceBroader topic: LEDs are the most widely used devices based on injection electroluminescence.

• Luminous efficacyRelated: LED performance is commonly reported and compared in lumens per electrical watt.

• Solid-state physicsBroader topic: Band structure determines the emitted light’s energy and color.

• Street lightingRelated: LEDs have become a major street-light source because they combine efficiency with controllability.

• Fluorescent lampCompared with: LEDs have largely replaced fluorescent lamps in many applications, without mercury discharge.

• P-type semiconductorRelated: Injected holes from p-type material participate in radiative recombination.

• Theatrical lightingBroader topic: LED fixtures enable efficient color mixing and reduce heat compared with many older sources.

• GalliumRelated: Gallium nitride and related compounds underpin many modern blue and white LEDs.

• Laser diodeCompared with: Unlike a laser diode, an ordinary LED does not rely on a resonant cavity for coherent emission.

• Luminous intensityRelated: LED intensity and beam direction shape its suitability for lighting applications.

• MicroLEDNarrower topic: Each MicroLED pixel is built from tiny light-emitting diodes.

• Semiconductor heterostructureRelated: Heterostructures can confine injected carriers in the active light-emitting region.

• Forward biasBroader topic: Its forward-biased junction converts carrier recombination into emitted photons.

• HeterojunctionRelated: Heterojunctions can confine carriers in the region where light is produced.

• Ohmic contactRelated: Ohmic electrodes deliver current to the active semiconductor layers.

• Neon lightingCompared with: LEDs can imitate neon's appearance while using a different light-producing mechanism.

• Semiconductor deviceBroader topic: It turns electrical energy into light through semiconductor carrier recombination.

• Solid-state lightingBroader topic: LEDs are the main devices used in solid-state lighting.

• White LEDNarrower topic: White LEDs build on the electroluminescence mechanism shared by all LEDs.

• Gas-discharge lampCompared with: LEDs use solid-state electroluminescence instead of ionized gas.

• LuminescenceBroader topic: It converts electrical energy into light through electroluminescence.

• Shuji NakamuraNarrower topic: Blue LEDs are a color-specific branch of this broader device family.

• Hiroshi AmanoNarrower topic: Blue LEDs were the device class Amano helped make efficient and commercially viable.

• Isamu AkasakiNarrower topic: Akasaki’s work addressed the long-standing challenge of creating an efficient LED in the blue part of the spectrum.

• OptoelectronicsBroader topic: It converts electrical energy directly into light through electron–hole recombination.

• Zhores AlferovRelated: Heterostructure design improves carrier confinement and efficiency in light-emitting diodes.

• Electric lightBroader topic: It generates light by electron-hole recombination rather than heating a filament.

• FlashlightRelated: LED adoption transformed flashlight efficiency, lifespan, and achievable brightness.

• Segment displayRelated: LED segments produce light directly and switch rapidly.

• Valence and conduction bandsBroader topic: Recombination across the gap releases photons with energies tied to the bands.