How LED works ⚡ What is a LED (Light Emitting Diode)

Everyone knows LEDs and knows how to use them, but ... how does an LED or light emitting diode work?

Help me make more and better videos!

My social networks:

Video references:

What software do I use?
◉ 2D editing and effects: Premiere Pro CC

[justincuthbert]

This is probably the best breakdown explanation of how diodes and LEDs work i have seen. Looking forward to using it to help electrical apprentices understand the internal workings of LED's. Thanks

[jorgecueto]

I casually have seen many many videos of diodes and semi conductors, but this video is explicit and straight to the chase and I've finally understood

[michaeledwardharris]

This is the best explanation of semiconductors and LEDs I've ever seen. Exceptionally well done.

[mikefixac]

After reading about diodes for over 50 years, I finally get it. One has to truly understand what happens at the subatomic level. What a brilliant presentation. So very well done, thank you.

[charlesw]

That's one of the clearest descriptions of anything I've ever seen.

[fuadtushar]

Underrated Content. Your clear and cogent explanation deserves more views, man. 😭

[chainstair]

Cant believe how good explained that was. I had it played fast forward on 2x and understood every single bit. Love it

[moonshot]

As a physics teacher I say: Grand way of explaining the basics of this phenomenon! Thank you for your great animation/ rendering! Michael B. Butter

[yourdaysbebright]

Very educational and clear. I'm really happy to know how these work now!

[crawford]

I was fortunate to be a technician on a research vessel and was tasked to illuminate evenly split hard rock core samples. The area to be illuminated was only 40 mm in-depth but in order to achieve the depth of field which was specified by the design criteria, the intensity if the illumination required the light source to be very close. 100 mm. As light dissipates to the square of the distance, the very bottom illumination would have “fallen off” enough to be visually detected. As the intensity of LED’s can be increased and decreased without change in color temperatures, I was able to make an array of lights and varied the voltage to paint evenly from top to bottom. This would have been impossible with halogen, fluorescence or other types of illumination. LED lighting was key, however we had to match color temperatures of all of the lights in the array because of the lack of consistency in manufacturing. Also LED lights are extremely heat sensitive and will change color temperature over time. It is a newer technology and has its share of growing pains if accuracy and consistency is needed.

[suchclevername]

Hats off to you for helping me FINALLY understanding WHERE the light actually is emitted from. Fascinating.

[lightbox]

This is seriously good science at a level and with language that I can understand. color temperature was an early problem with LED light sources. the temp was "cold" and ugly. Quite quickly, manufacturers figured out how to add contaminants to give a warmer light.

[NightWear]

Excellent video! I've known diodes and studied them. This is gold. Thank you.

[warlockpaladin]

Former engineering student here... this was very nice work.

[davidbwa]

Thank you for a detailed yet easily understandable explanation.

[weirdcreatures]

Best Explanation I've ever heard about any kinda diode. Hats off man

[PurgatoryVLM]

that's the best description i've ever seen. Bravo

[vpilot]

I was a project manager at EMI Research (UK) in the 1970s. One of my engineers had used one of the new green LEDs to indicate that his system had passed all fault checks. My boss, an assistant director, was appalled at the extravagance of using a green LED.

[chiffon]

as simple as it looks but details of how it actually works is complicated, salute to those great minds who invented this "everyday use" tech.

[aritrabhattacharyya]

Ohh What a crystal clear explanation of electrons transitioning from Conduction band to valence band ❤from India