REVIEW ARTICLE ON LIGHT EMITTING DIODE (LED)

Abstract

The emphasis of this review article is mostly light emitting diodes (LED). Here, we'll focus on a few key elements, including their basic design, operation, applications, and pros and disadvantages. Forward voltage is applied to semiconductor light-emitting diodes (LEDs), which generate noncoherent, narrow-spectrum light. LEDs come in packages ranging from mill watts to more than 10 W, and their wavelengths extend from the UVC band to infrared (IR). In 1961, the patent for the first LED, an IR emitting gadget, was issued. The first useful visible spectrum LED was developed in 1962. In the late 1990s, the first high-power (1-W) LEDs were created. LEDs produce light utilizing a semiconductor method as opposed to the superheated element, ionized gas, or arc discharge used in conventional light sources. The wavelength of the light is inclined by the materials used to fabricate the semiconductor junction. LEDs are currently more energy efficient than incandescent lights thanks to modern technology, which increases the amount of light they produce per unit of electricity. They are solid state electronics, which are significantly more enduring than any glass envelope lamp and safer than fluorescent lights. By using LED Lighting Systems, professionals may better understand some of the key performance characteristics of LEDs and other traditional light sources, as well as the differences between them. In order to employ LEDs in lighting applications successfully, it is important to understand their electrical, thermal, and optical performances. The information in this article should be useful to any professional who wants to effectively use LED systems in lighting applications.