Overview of Solar Lighting System

In recent years, the global energy crisis has intensified, and conventional energy can no longer meet the needs of world economic development. As an important renewable green energy, solar energy is favored by countries all over the world. The solar lighting system combines the advantages of semiconductor and solar energy resources, effectively improving lighting efficiency and green energy saving. The semiconductor solar lighting system is mainly composed of an optical system, electrodes, PN junction chips, etc. The area of u200bu200bthe light-emitting body on the wafer is about 0.025 square millimeters. The whole luminescence process goes through three stages: carrier injection under forward bias condition; light energy transfer; recombination radiation. Semiconductor wafers are encapsulated in epoxy. When electrons flow through the wafer, the positively charged electrons and the negatively charged electrons recombine in the hole region, and the holes and electrons disappear, producing photons. The band gap is proportional, and the color of light corresponds to the energy of the photon. According to the visible spectrum analysis, red and orange light have the least light energy, and violet and blue light have the most light energy. Solar lighting system manufacturers said that with the rapid development of packaging technology and material technology, the luminous efficiency of green LEDs is about 50lm/W, and the luminous efficiency of orange and red LEDs is 100lm/W. The full-color, ultra-high brightness and high-efficiency characteristics of LEDs are being used more and more. Especially in outdoor lighting systems. LED realizes all visible light in chromaticity, especially the emergence of ultra-high brightness white LED, which promotes the rapid development of light source. The solar lighting system believes that, in general, the light intensity of lcd is the dividing point between high-brightness LEDs and ordinary LEDs. GalnAs, AIlnGaP and A1GaAs materials are mainly used to process high-brightness LEDs. Among them, high-brightness red LEDs use A1GaAs materials, high-brightness yellow-green, yellow, orange, and red LEDs use AIInGaP, and high-brightness purple, blue, and dark green LEDs use GalnAs. LED semiconductors have high luminous efficiency, halogen tungsten lamps and incandescent lamps have a luminous efficiency of 12~20 lumens/watt, high-pressure sodium lamps 90~130 lumens/watt, fluorescent lamps 50~60 lumens/watt, narrow spectrum, good monochromaticity, and emits colored visible light. No need to filter. At the same time, the LED is an all-solid-state light-emitting body, which is impact-resistant, shock-resistant, not easily broken, and non-polluting. It can be developed into small and thin lighting products for easy maintenance, repair and installation. Moreover, the start-up time of the LED light source is short, and the characteristics of the gas discharge light source largely determine the start-up time. This epoxy-encapsulated semiconductor light source is free of filament, glass and other vulnerable components and can withstand shock and vibration.