How CREE LED Lights Work

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How CREE LED Lights Work

A high-quality LED manufacturer, Cree LED lights use light-emitting diodes as a source of illumination; they are energy efficiency and have a long life. Buyers can also use them in lamps in a similar fashion to more traditional light bulbs.



Made from a variety of inorganic semiconductor materials, the CREE LED light colour depends on the semiconductor material and the current that runs through it. Red and infrared LEDs use gallium arsenide, while bright blue LEDs contain gallium nitride. Still, white LEDs are made with yttrium aluminium garnet. It is also possible to make orange, green, violet, purple, and ultraviolet LEDs.



Designed to fit into electrical circuits, their LED bulbs see use in HDTVs, radios, and computers as well as traffic lights, brake lights, and other applications that require bright, long-lasting, and affordable lighting. Unlike traditional incandescent light bulbs, these bulbs do not contain a filament that burns out, nor do they radiate excessive heat. Instead, the movement of electrons in a semiconductor material produce the light.


P-N Junctions

Cree LED lights work using a silicone-based light-emitting diode. This diode has a positively and negatively charged material that, when combined, create a p-n junction. When current passes through this one-way junction, the atoms in one material are excited to a higher energy level. To return to their stable state, they have to release the energy, and in doing so, they create light. The colour from the LED is a direct result of the energy gap in the semiconductor of the diode.



The different types of Cree LED lights include miniature, mid-range, high-power. Miniature LED lights see use as indicators and come in several sizes that range from 2 to 8 mm; these varieties may be through-hole or surface mounted. On the other hand, mid-range LED lights are typically through-hole-mounted and most commonly used in light panels, emergency lighting, and automotive tail-lights. Still, high-power LEDs, such as the Cree X-lamp, are driven at extremely high currents and often used as replacements for incandescent, halogen, and fluorescent lamps.


Flashing LED Lights

Cree offers several application-specific LED variations, including flashing LED lights. Often used to attract attention, they contain an integrated multivibrator circuit that causes the flashing, typically at a one-second interval. Most only emit one colour; however, some devices are capable of flashing between several colours.

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