LED Lighting Is a Semiconductor Solid Glowing Device

LED Lighting that is LED Lighting, full name is the Lighting Emitting Diode, is a semiconductor solid glowing device. It is using solid semiconductor chips as luminescence materials, in a semiconductor through the charge carriers happen out the excess energy compound and cause photon emission, an immediate red, yellow, blue, green, green, orange, purple, white light. LED lighting products is to use as the light source made LED lighting apparatus. LED lighting principle: LED by Ⅲ-Ⅳ is the compounds, such as GaAs (gallium arsenide), GaP (phosphating gallium), GaAsP (p gallium arsenide) made of semiconductor, its core is the PN junction. So it is generally P-N “I-N characteristics, that is, is the guide, reverse globe, breakdown characteristic. In addition, with a certain conditions, it also has the luminescence properties. The positive voltage and electronically by N area into the P area, cavitation by P area into N area. Into each other area of minority carriers (ShaoZi) with majority carrier (many children) composite and shine. Light is that in P happened in the area, so the injection of electronic and valence band hole direct compound and shine, or to capture light center, then and hole composite luminescence. In addition to this kind of glowing compound outside, still some electrons are the luminous center (the center between the conduction band, interface among with nearby) capture and then and hole compound, every time release energy is not big, cannot form visible light. The shine of compound in the relative amount of light the proportion of composite, the greater the light quantum efficiency is higher. Because in the ShaoZi composite is the spread of light, so light only in the near PN junction plane μ m produced several within.