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Monocrystalline Silicon VS Polysilicon

Author: Source: Datetime: 2016-10-18 16:37:17
There are various schools of portable solar power generator technology, crystalline silicon cells, thin film cells, organic cells, dye-sensitized cells, and so on perovskite. In many schools, the crystalline silicon cells has been firmly occupy the dominant position, since 2006, the market share has been above 80%. However, there is competition within the crystalline silicon cells. Competition polycrystalline silicon cells and between cells, never stop too, recently intensified.
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Decay Rate Component Analysis

Attenuation Attenuation is generally divided into the type of initial light-induced attenuation and aging decay. In addition, PID electrical potential induced attenuation because the nature of recent years also received recognition .LID produced after receipt of the light inside the solar battery materials to produce composite center. Currently more accepted theory is that boron-oxygen complexes produced after exposure reduces the minority carrier lifetime. Boron-doped polycrystalline silicon interstitial oxygen and substitutional boron in the light excitation formed deep level defects caused by carrier recombination and cell performance recession, there is a greater cause of PV modules in the sharpness of the output power of the initial application of a few days decline, but after some time the output power will gradually stabilize.

The lifepo4 battery itself caused by aging decay, mainly influenced by the production process the type of battery (monocrystalline, polycrystalline) and battery; packaging materials caused by aging decay, the decay rate was positively correlated with the production processes and packaging materials, components apply to environmental costs of PV modules . One of the common cracking, yellowing appearance, sand abrasion, hot spots, aging of components can accelerate component power attenuation. PID electrical potential induced attenuation. This attenuation component is present between the internal circuit and the grounded metal frame which will cause high voltage power module attenuation, glass and also, back, EVA, temperature, humidity, and voltage.

Given the large differences in different brands of reason, the use of only a few brands of single-crystal silicon decimal polysilicon comparison test, only the representative of the brand's performance test used; if the number of brands is not big enough, and can not have a wide range of on behalf of significance. Type monocrystalline silicon or polycrystalline silicon component is not the most important factor component attenuation. In view of this, it can be considered, under all other conditions being equal, the use of single crystal silicon or polycrystalline silicon, will not affect portable solar power generation projects.


Portable Solar Generators


Assembly line factory, good use of packaging materials, to protect the cells, components decay naturally low; the use of components in a dry, cool environment, than by the use of low attenuation in hot and humid conditions. This also explains why the component type (monocrystalline, polycrystalline) for components decay rate impact will be less than the impact of the brand, the use of the environment. Terms of photoelectric conversion efficiency of monocrystalline higher than polycrystalline. Therefore, does not consider the cost of the components of solar powered portable generator, the system will be lower than the cost of a single crystal of polycrystalline.

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