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 Lighting: Definition, Working Principle and …
Jun 3, 2025 · Unlike traditional incandescent bulbs or fluorescent lamps, an LED is a semiconductor device that emits light when electrical current passes through it in the forward …
What is LED? - BYJU'S
When current passes through an LED, the electrons recombine with holes emitting light in the process. LEDs allow the current to flow in the forward direction and blocks the current in the …
What Are LED Lights? Working, Types, Benefits & Applications
What Are LED Lights? LED lights are semiconductor devices that convert electrical energy directly into light through electroluminescence. Unlike traditional bulbs that produce light by heating …
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, …
What is LED ( Light Emitting Diodes ) | LED Lighting Supply
Dec 3, 2019 · LEDs are Light-Emitting Diodes, semiconductor electronic devices that produce visible light. They were initially used as simple indicator lights. Today, they are used …
Light Emitting Diode ＜What are LEDs and How Do They Work?＞
LEDs are a type of semiconductor called "Light Emitting Diode".
Light Emitting Diode (LED): What is it & How Does it Work?
Feb 24, 2012 · Light Emitting Diode (LED): What is it & How Does it Work? LED Definition: A Light Emitting Diode (LED) is a semiconductor device that emits light when electric current flows …