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, thereby …
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.
LED Basics - Department of Energy
LED lighting technology now offers the highest luminous efficacies (and efficiencies) of any light-source technology, and low prices have resulted in significant adoption. But despite this progress, further …
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 Drivers and many.
What is LED Lighting: Definition, Working Principle and Components
Jun 3, 2025 · What is LED Lighting? LED lighting refers to the use of a light emitting diode as a source of illumination. Unlike traditional incandescent bulbs or fluorescent lamps, an LED is a semiconductor …
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 microchip, which …
Light Emitting Diode (LED): Principle, Advantages, and Uses
Jun 10, 2025 · LED works by passing electricity through a semiconductor, which releases energy in the form of light. This process makes an LED highly efficient, durable, and versatile, finding its …
Introduction to LEDs - Lighting Design Lab
LED illumination is achieved when a semiconductor crystal is excited so that it directly produces visible light in a desired wavelength range (color). LED units are small, typically 5mm (T 1-3/4).
LED technology | ERCO Lighting knowledge
LED technology: what is an LED? LED is the abbreviation for "Light Emitting Diode". This is a semiconductor device that emits light when direct current flows through it. The colour of the …
LED Technology Explained: The Basics — Low Energy Designs
Learn about the history and fundamentals of LED (Light Emitting Diode) technology. Discover energy-efficient LED lighting solutions and their advantages in performance and cost savings.