Electroluminescence (EL)'s an optical phenomenon and electrical phenomenon in which a material emits light in response to an electric current passed through it, or to a strong electric field. This's distinct from light emission resulting from heat (incandescence), chemical reaction (chemiluminescence), sound (sonoluminescence), or other mechanical action (mechanoluminescence). Mechanism Electroluminescence's the result of radiative recombination of electrons and holes in a material (usually a s… (More on Electroluminescence)