Light emitting diode or LED Bulbs are made up of two types of material — N-type material and P-type material. The N-type material is engineered to contain extra electrons with extra charge and has free electrons floating around in it. The P-type material has extra "holes” for the opening for electrons and is filled with the charged electrons.

An LED produces light when electrons move around within its semiconductor structure, when the current is activated the electrons move from the negatively charged area to a positively charged area. This generates energy which is released as a "photons" — units of light. Additionally LED light Bulbs have a far long lasting life as compared to CFL and traditional Bulbs.