Polycrystalline Silicon Cells and Amorphous Solar Power Batteries
Author: Source: Datetime: 2016-10-04 11:47:30
The crucible growth method is a polysilicon rod obtained by pouring molten silicon into a crucible and controlling the cooling rate thereof so that the cross section thereof may be square. Square silicon rods need to be sawed to get the battery wafer, but to avoid the circular wafer cut into a square process, thereby reducing the production of solar power batteries in the process of energy consumption and material waste solar powered portable generator. This method of production of polycrystalline silicon cell conversion efficiency inch up to 15%. Method is directly from the molten silicon out of a cross-section of octagonal polysilicon, the wall thickness of 3300 and up to 6 to. The octagonal tube can then be cut into individual cell wafers with a laser. It is reported that this method of production of polycrystalline silicon cell conversion efficiency has reached 14%.
Polycrystalline silicon cells still maintain the basic characteristics of the crystal, so it is an indirect band gap of 1.16 of the band gap material, wafer manufacturing follow-up process and monocrystalline silicon cells the same. In order to ensure sufficient light absorption, the wafer also requires a larger thickness. Amorphous silicon does not have a specific crystal structure, the direction of the silicon atoms are arranged in random order and the spacing is different from one another solar powered portable generator, resulting in many covalent bonds in the material is not complete
Early amorphous silicon cells in the light of performance degradation, through the design and production technology development, such as the use of multi-junction technology, making the amorphous solar power batteries performance has been stable. The theoretical maximum conversion efficiency of amorphous silicon is 27%, and the conversion efficiency of commercialized products is about 10%. Because it can be made using deposition technology, and the thickness of the material can be made very thin, amorphous silicon cells can be produced instainless steel and polymer substrates to form flexible flexible products. On the indirect bandgap materials, monocrystalline silicon, there is no certain thickness can not guarantee high conversion efficiency, solar powered portable generator while the advantages of amorphous silicon thin-film battery can save a lot of expensive pure silicon material, so in the production of thin-film battery, the non- Crystalline silicon has its advantages. TAG: Jolywood Nuon German Category Separate Telangana MW 10 Used Tax Guarantee Powertrain Automotive Experiment Research
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