How LED Lights Give Out Different Colors

Light-emitting diodes, more commonly known as LEDs, are semiconductor devices that give out light when electric current moves through them. When operating, the semiconductor’s electrons mix with electron holes, dispersing energy as photons. The color emitted by the LED depends on the energy the electrons need to pass the semiconductor’s band gap.

As time goes on, LEDs have become more and more popular. This is undoubtedly due to the vast array of benefits that these lights hold, including the fact that they are better for our environment, last longer than conventional bulbs, and consume less power than them too. They also boast enhanced physical robustness and are often cheaper than traditional designs.


The spectrum of colored diodes
You may have seen various colors of LEDs crop up in people’s houses, often to set a particular scene and make interior designs seem more attractive. So, how do these lights give out various colors?

LEDs utilize materials which can withstand the required levels of heat, electricity, and humidity, ensuring that they can generate photons at various wavelengths. These wavelengths appear as different-colored lights to the human eye.

Colored LED lights are constructed of three diodes – red, green, and blue. Many people shorten this to RGB when referring to the RBG concept, a model which discusses wavelength combinations. Red, green, and blue are utilized since these are the primary colors which, when combined, create different colors. Red LEDs use the aluminum indium gallium phosphide material system, green LEDs utilize gallium phosphide, and blue LEDs employ indium gallium nitride.

The three diodes are designed so close to each other that the human eye visualizes a blend of colors instead of picking out individual-colored diodes. Many everyday household items, such as mobile phones and televisions, utilize this primary color combination method, displaying red, green, or blue lights with different intensities in order to create millions and millions of different colors! White light can be created when an electric current goes through all three of the diodes at the same intensities.


Alternating LED colors
Color LEDs can either be single-colored or multi-colored. Single-colored LEDs cannot alternate between different colors because they lack the needed components – for example, a single-colored red light would only possess a red diode rather than a green and blue diode too. All three diodes are not included in single-color designs because it would be a waste to include diodes which are never in use.

On the other hand, multi-colored LEDs – the most popular type of LED product – possess all three diodes. The manufacturer of each specific LED product has the power to determine the combination of color options.

As a more innovative product, the smart LED design has managed to become increasingly popular in the marketplace. This includes color-changing features which can be adjusted from an electronic device such as a mobile phone.

So, there you have it. Hopefully, you now have a better idea about how LED lights emit different colors to suit customizable tastes. It’s worth doing a little research about each individual LED product you intend on buying to ensure you know what type of lighting experience you can expect to gain. Whatever scene you want to set in your interior today, anything is possible with innovative smart LED products!