Science behind LED
LED or light-emitting diode is a semiconductor device that emits light on certain wavelength. Semiconductor device is an electronic component that uses the electronic properties of semiconductor material and organic semiconductors . An electronic component is any physical entity in an electronic system used to affect electrons or their associated fields. Semiconductors are the invention of modern electronic. It has an electronic conductivity (mutual of electrical resistivity and measures the capability of a material to conduct electrical current) value between conductor (type of material that allows electric current to flow in one or more directions) and insulator ( a material whose internal electric charges do not flow freely and thus creates an obstruction to conduct electric current in an electric field) . LED is consisting of a chip of semiconducting material doped (with a dopant [a mark of impurity element within a substance to alter the electrical properties] w