Polysilicon or simply poly is a popular solar model that is made of numerous crystals as the name suggests, though it has lesser uses as compared to the efficient monocrystalline solar panel. It is also cheaper to make these models of solar. A good example of this kind of solar panel is the photovoltaic cells, which are cheaper in terms of costs but with lower efficiency because they are poorly controlled.
Polycrystalline solar panels, it must be understood, they are generally preferred, considered and widely used due to their excellent price/performance ratio and their close to zero sensitivity to environmental conditions. These solar panels are believed to be even stronger than their monocrystalline counterparts.
In integrated circuits, they are generally used as gate material and interconnections because they are short and since you can dope it, and thus tune the performance of a MOS transistor threshold value (turn-on-voltage).
From a scientific point of view, it was argued initially that the fabrication process after the initial doping required very high temperatures annealing, as such metal gates would melt whereas the polysilicon would not, thus allowing a one-step-process of etching the gates compared to the initial elaborate multi-steps seen today in metal gate processes
Benefits Of Polycrystalline Solar Panels
1. Lower Per Panel Costs
For cost effective panels, they are generally considered cheaper compared to their mono-silicon counterparts not only due to their overall cheaper production cost but also for their market prices that are relatively quite affordable for small-scale homeowners who dream of having a solar panel over their roofs.
2. Durability And Longevity
As of compared to the monocrystalline type, they are not way far from each other when it comes to their life span. With about close to 25 years of energy production, it is durable.
3. Environmental Enhancements
In the spirit of green energy production, companies like Mitsubishi have initially and continue to produce environmental friendly panels through new technology based on scientific research that eliminate expensive soldering (which contains lead).
4. Efficiency Of Polycrystalline Solar Panels
Among the three solar panel models, monocrystalline solar panels have been reported to be of the highest efficiency, followed closely by the polycrystalline solar panels with an average total efficiency percentage of about fourteen and eighteen percent. The thin film modules are the least efficient of the three panels.
5. Lower Electric Bills
Another advantageous quality of these panels rests on their ability to produce less waste, in addition to the fact that they need less energy and raw materials to manufacture. Concerning their appearance, they mainly come in bluish color but some have assumed the black color.


Find more information relating to Aluminum Smelting, and Polysilicon here.