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the making of solar panels

Step 1: Sand

Many solar panels are made out of silicone, which is made out of natural beach sand. Converting sand into a high-grade silicon comes at a high cost. Silicon is produced from quartz sand in an arc furnace at super high temperatures.

 

Step 2: Ingots

Hundreds of these rocks are being melted at very high temperatures to form ingots in the shape of a cylinder. To give it that shape, a steel, cylindrical furnace is used. Boron is combined to the course, which will give the silicone positive electrical polarity.  

 

Step 3: Wafers

The silicon ingot is sliced into thin disks, also called wafers. A wire saw is used for accurate cutting. The thinness of the wafer is like a piece of paper.

 

Step 4: Solar Cells

 

The following steps convert a wafer into a solar cell so it’s capable of converting sunlight into electricity. The metal conductors are added on, which the coating helps the absorption of sunlight, rather than reflecting it. In an oven-like chamber, phosphorous is being scattered in a thin layer over the surface of the wafers. This will charge the surface with a negative electrical direction.

 

Step 5: Solar Cell to Solar Panel

 

Solar cells are fastened together, using metal connectors to link the cells. After the cells are put together, a thin layer of glass is put on the front side, facing the sun. The backside is made from a highly durable, polymer-based material. It prevents from soil, water, and other things coming in the back of the panel.

 

Step 6: Testing the Modules

 

The solar panel is tested to ensure the cell work perfectly. It’s checked on power output, efficiency, voltage, current, impact and temperature tolerance. Cleaning and inspection are the final steps of the production before the module is ready to be shipped to homes or businesses.

PV-Schematic-2x1.jpg

For more information about solar power see our blog posts! 

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