ELECSYNERGY (Pack of 100 Pieces) Bright RED LED 5mm Electronic Components Electronic Hobby Kit

A red LED (Light Emitting Diode) is a semiconductor light source that emits yellow light when an electric current passes through it. LEDs are widely used in various applications due to their efficiency, long lifespan, and durability. Here is a description of a yellow LED: Description of a Red LED A red LED is designed to emit light in the yellow region of the visible spectrum, typically around 590 to 595 nanometers in wavelength. The LED consists of a semiconductor material, usually gallium arsenide phosphide (GaAsP) or aluminum gallium indium phosphide (AlGaInP), which is doped to create a p-n junction. When a forward voltage is applied across the p-n junction, electrons and holes recombine, releasing energy in the form of photons. The energy of these photons corresponds to the yellow color of the emitted light.