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Solar cell is responsive to light and can convert light energy into electrical devices. Photovoltaic effect can produce many kinds of materials, such as: silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, copper indium selenium. Their power is basically the same principle, is an example to describe the crystal light generation process. P-type crystalline silicon doped with phosphorus available through N-type silicon, the formation of P-N junction. When the solar energy irradiation surface, part of the photon absorbed by silicon material; photon energy transfer to the silicon atom, so that electronic transitions took place, a free electron concentration in the PN junction formed on both sides of the potential difference, when the external circuit connected , under the action of the voltage, there will be current through an external circuit to generate a certain output power. The essence of this process are: photon energy into electrical energy process.
"Silicon" is stored on our planet one of the most abundance of material. Since the 19th century, scientists have found a crystalline silicon semiconductor properties, it almost changed everything, even human thought, late 20th century. Everywhere in our lives, "Silicon" figure and the role of crystalline silicon solar heater was formed nearly 15 years, the industrialization of the fastest. Production process can be divided into five steps: a, purification process b, the process of pulling rod c, slicing process d, the process of manufacturing the battery e, packaging process.
Author: Haining City, New Energy Technology Co., Ltd. Sang Chao
website: www.sunsurf.com.cn
main product: solar heater、solar energy
