Light-emitting diode - Wikipedia
In electrical engineering, 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, …
LED | Definition, Light, & Facts | Britannica
Nov 25, 2025 · An LED (light-emitting diode) is a semiconductor device that emits infrared or visible light when charged with an electric current.
Learn About LED Lighting - ENERGY STAR
LED stands for light emitting diode. LED lighting products produce light up to 90% more efficiently than incandescent light bulbs. How do they work? An electrical current passes through a …
What is LED ( Light Emitting Diodes ) | LED Lighting Supply
Dec 3, 2019 · How does an LED work? The P-N junction is the basis of the LED’s functioning. The LED has an anode and a cathode separated by a crystal of semiconductor material. By adding …
Light Emitting Diode (LED): Principle, Advantages, and Uses
Jun 10, 2025 · A light-emitting diode (LED) is a small electronic device that emits light when an electric current flows through it. LED works by passing electricity through a semiconductor, …
Light Emitting Diode (LED): What is it & How Does it Work?
Feb 24, 2012 · What is a Light Emitting Diode (LED)? A Light Emitting Diode (LED) is a special type of PN junction diode. The light emitting diode is specially doped and made of a special …
Light Emitting Diode Basics | LED Types, Colors and Applications
Sep 16, 2024 · This article is composed as a brief understanding guide to LED, which includes a brief introduction, the electrical symbol of LED, types, construction, characteristics, LED …
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