Light emitting diodes, commonly called LEDs, are real unsung heroes in the electronics world. They do many different jobs in all kinds of devices. They form numbers on digital clocks, …

Aug 14, 2025 · For an LED to work, electricity must flow from the anode to the cathode. The process by which an LED creates light is called electroluminescence. This is when a material …

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 …

Sep 19, 2019 · Compared to the much less efficient incandescent light bulb, which produces light by converting electrical energy into heat energy, LEDs directly convert electrical energy into …

Jul 22, 2022 · An LED is a special type of diode (a type of electronic component that allows electricity to flow through in only one direction). Diodes have been around for many decades, …

Aug 11, 2018 · How an LED works: When forward biased, electrons and holes in an LED recombine at the depletion layer, releasing energy as light, illustrating how an LED works.

At its core, an LED is a semiconductor device that converts electricity into light. Unlike traditional incandescent bulbs that require a filament, LEDs use a semiconductor material to produce light.

Before we answer the question what is an LED or delve into how LEDs work, let’s do a quick history lesson on a few common types of light emitting devices you’re probably familiar with. …

Let's begin with the basics: How does an LED produce light? An LED is what's called a "solid-state lighting" technology, or SSL. Basically, instead of emitting light from a vacuum (as in an …

Oct 27, 2025 · When you turn on an LED, electrons start to flow from the negative side to the positive side of the diodes. As the electrons flow through the semiconductor, they bump into …