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A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.
Learn how light emitting diodes (LEDs) produce light by moving electrons in a semiconductor material. Compare LEDs with incandescent and fluorescent bulbs in terms of efficiency, cost and longevity.
Learn how LEDs work, how they are made, and what colours they emit. Find out the differences between LEDs and normal diodes, and the advantages of LEDs over other light sources.
Learn how LEDs produce light by electroluminescence and how the wavelength depends on the semiconductor materials. Find out how the refractive index, optical coatings and die shape affect the light emission efficiency and color of LEDs.
Dioda elektroluminescencyjna, dioda świecąca, dioda emitująca światło, LED (ang. light-emitting diode) – dioda zaliczana do półprzewodnikowych przyrządów optoelektronicznych, emitujących promieniowanie w zakresie światła widzialnego, podczerwieni i ultrafioletu.
LEDs (that's "ell-ee-dees") are a particular type of diode that convert electrical energy into light. In fact, LED stands for "Light Emitting Diode." (It does what it says on the tin!) And this is reflected in the similarity between the diode and LED schematic symbols:
22 lip 2022 · But, even better, there are LEDs (light-emitting diodes) that are just as bright as bulbs, last virtually forever, and use hardly any energy at all. An LED is a special type of diode (a type of electronic component that allows electricity to flow through in only one direction).
