LEDs, or Light Emitting Diodes, are semiconductor devices that emit light when an electric current passes through them. They are based on the principle of electroluminescence, where electrons recombine with holes in the semiconductor material, releasing energy in the form of photons. This process is closely tied to phenomena like optical absorption and emission, Auger recombination, and the concepts of carrier lifetime and diffusion length.
congrats on reading the definition of LEDs. now let's actually learn it.