Pin Mat Troi

There are a number of various technologies which you can use to generate devices which convert light into electricity, and we are planning to explore these in turn. Often there is a balance to get struck between just how well something works, and how much it costs to produce, and the same can be stated for solar power.
We take solar cells, and that we combine them into larger units referred to as "modules," these modules," these modules can again be connected together in order to create arrays. Thus we can easily note that there exists a hierarchy, where the solar cell could be the smallest part.
Why don't we check out the structure and properties of solar "cells," but bear in mind, when combined into modules and arrays, the solar "cells" listed here are mechanically based on other materials-aluminum, glass, and plastic.
One of many materials that solar cells can be created from is silicon-this will be the material that you just find inside integrated circuits and transistors. You'll find reasons for using silicon; it is the next most abundant element on the planet after oxygen. If you think about that sand is silicon dioxide (SiO2), you understand there is a lot of computer available!
Silicon can be utilized in numerous new ways to produce photovoltaic cells. The best solar panel technology are "monocrystalline solar cells," they're slices of silicon taken from just one, large silicon crystal. As it's a single crystal it has a very regular structure with out boundaries between crystal grains so it performs well. Most effective identity a monocrystalline solar panel, because it definitely seems to be round or even a square with rounded corners.

Among the caveats using this type of method, because you will see later, is that when a silicon crystal is "grown," it makes a round cross-section solar cell, which will not fit well with making solar panel systems, as round cells are difficult to rearrange efficiently. The following sort of solar cell we will be looking at also created from silicon, is slightly different, it is a "polycrystalline" solar panel. Polycrystalline cells remain produced from solid silicon; however, the method employed to make the silicon where cells are cut is slightly different. This brings about "square" solar cells. However, there are many "crystals" in a polycrystalline cell, so that they perform slightly less efficiently, whilst they be cheaper to generate with less wastage.
Now, the situation with silicon cells, even as we might find within the next experiment, is because they are effectively "batch produced" meaning they may be created in small quantities, and are fairly costly to manufacture. Also, as these cells are formed from "slices" of silicon, they will use a great deal of material, which suggests they are very costly.
Now, there exists a different sort of cells, so-called "thin-film" cells. The main difference between these and crystalline cells is rather than using crystalline silicon, these use compounds to semiconduct. The chemical compounds are deposited on top of a "substrate," frankly basics to the solar cell. There are several formulations that do not require silicon in any respect, for example Copper indium diselenide (CIS) and cadmium telluride. However, there is also a process called "amorphous silicon," where silicon is deposited on a substrate, however, not inside a uniform crystal structure, but as a skinny film. Moreover, instead of being slow to produce, thin-film solar cells can be achieved using a continuous process, making them less expensive.
However, the disadvantage is when they're cheaper, thin-film solar panels are less efficient than their crystalline counterparts.
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