Solar panels, monocrystalline silicon and polycrystalline silicon solar street light

On the solar energy utilization, monocrystalline silicon and polycrystalline silicon play an enormous role. Although from now, want to make solar power has a larger market, accepted by consumers, it is necessary to improve the photoelectric conversion efficiency of solar cells, reduce the production cost

monocrystalline silicon and polycrystalline silicon play an important role in solar energy utilization. Although from now on, in order to make the solar power generation has a larger market and accepted by the consumers, it is necessary to improve the photoelectric conversion efficiency of solar cells and reduce the cost of production. Can be seen from the development of the current international solar cells, its development trend is monocrystalline silicon, polycrystalline and ribbon silicon and thin film materials ( Including microcrystalline silicon film, compound film and dye film) The difference between monocrystalline silicon, amorphous silicon and polysilicon 1. Distinguish between the crystallization of amorphous? See in daily life of solid can be divided into two categories: the amorphous and crystalline. The interior of the amorphous material atoms no certain rules. When they break, fracture is random, such as plastics and glass. Called the crystal material presents a natural regular polyhedron, have obvious edge and plane. Its internal atoms orderly arrangement according to certain rules. Therefore, when it breaks, it is also based on certain plane and fracture, such as salt and crystal. 2. Distinguish between single crystal and polycrystalline some crystal is composed of many small particles. If grain arrangement is irregular, the crystal called polycrystalline, such as copper and iron. However, there are crystal itself is a complete big grain. This crystal is known as single crystal, such as crystal and stone. The comparison of three monocrystalline silicon and polycrystalline silicon photovoltaic cells? Monocrystalline silicon cell conversion efficiency is high, stability is good, but the cost is high. Polysilicon batteries than pulling of monocrystalline silicon solar cells of low cost, low conversion efficiency slightly. Material in various defects, such as grain boundary and dislocation, the impurity in the micro defects, material carbon and oxygen as well as the process of pollution in the process of transition metals. Monocrystalline silicon and polycrystalline silicon is introduced; A, monocrystalline silicon can be used for diode, rectifier device, circuits and solar cells, single crystal production and deep processing of products. Its subsequent product integrated circuit and semiconductor device has been widely used in various fields, has an important role in military electronic equipment. With the rapid development of photovoltaic technology and miniature semiconductor inverter technology, made of the number of solar cells can convert solar energy into light energy directly, realize the beginning of the green energy revolution. The 2008 Beijing Olympic Games will be held in Beijing. Green Olympics; As important exhibition in the world, the use of single crystal silicon will is a very important part of it. At present, foreign theories of solar photovoltaic power station has reached maturity stage, is in the transition to the practical application stage. Solar number use will be popularized to the world, the market demand is self-evident. To cope with the international trend, hebei NingJin monocrystalline silicon industrial park to the world provides excellent performance, complete specifications of monocrystalline silicon products. Monocrystalline silicon products including phi; 3; - φ; 6; Monocrystalline silicon rods, discs and rods, wafer is suitable for all kinds of semiconductor and electronic products production needs. Product quality through the world's most advanced detection instruments, reached the world advanced level. USES: it is the raw materials of semiconductor silicon devices, used in the manufacture of high power rectifier, high-power transistors, diodes, switching devices, etc. two Polycrystalline silicon polysilicon is the production of monocrystalline silicon raw material directly, is the modern artificial intelligence, automatic control, information processing, the photoelectric conversion semiconductor devices such as electronic information base material. Is called. The cornerstone of microelectronics construction; 。