LED means Light Emitting Diode . LED which is used as a semiconductor and work as alternative source of sunlight. In 1962 LED discover scientist and it’s intensity is very less than update LED. One can see various types of LED such as Red Light Emitting Diode, it’s intensity is very small Blue Light Emitting Diode, it’s intensity is very high Green Light Emitting Diode, it’s intensity is very high In physical science two types of LED seen one is p-type LED and one is n-type LED. In a p-n junction when holes and electron meets energy released from electron, because electron contain high energy and hole contain low energy, when energy level change and Photon emit energy , light is created. Some LED materials examples given bellow: White : White color LED contain Yellow phosphor, voltage drop amount is 3.5 Volt and wave length is board spectrum. Pink : Pink color LED contain phosphor which is may be one or tw
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