Light-emitting diode - Wikipedia
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 …
LED | Definition, Light, & Facts | Britannica
Oct 13, 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 …
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 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 …
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 …
What is LED Lighting: Definition, Working Principle and Components
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 an LED? | All About LEDs | Adafruit Learning System
Feb 11, 2013 · In fact, the first two letters of LED stand for Light Emitting. A really nice thing about LEDs is that they are very simple. Unlike some chips that have dozens of pins with names and …
Light Emitting Diode ＜What are LEDs and How Do They Work?＞
LEDs are a type of semiconductor called “Light Emitting Diode”. White LEDs, which have achieved practical realization through the use of high-brightness blue LEDs developed in 1993 …
LED (Light-emitting diode) explained - Soldered Electronics
The first question that might pop into your mind is, what is exactly an LED? A regular diode is a semiconductor device that works as a one-way switch for electrical current. It allows current in …