Polycrystalline solar cells, also called multi-crystalline solar cells, received their name because of their appearance and the way they are manufactured. They were created by multicrystalline technology and are cut from a silicone material that has grown in many different directions. Each cell has a block of multiple crystals instead of a single silicone crystal which gives the cells a unique appearance, much like that of shattered glass or a mosaic. Fine wafers are cut from a large block and are then attached side by side to create panels. Because these solar cells have a slightly lower efficiency than other types of cells each individual solar cell is larger than average and thus creates a larger module.
Polycrystalline Solar Cells
In spite of the fact that these cells are less efficient than single crystal cells they are cheaper and easier to produce and thus attract potential buyers who are faced with spending thousands of dollars. They also last as long as more expensive cells and make it possible for nearly everyone to have solar power in their homes. Different brands bring different prices but in general the price ranges between eight and twelve dollars for a watt of power and cells average an efficiency rating of 12 percent which means that twelve percent of the sunshine they receive is then converted into electricity. Applied to an electrical panel that is in an environment of at least seventy degrees, this results in approximately one hundred and twenty five electrical watts for each square foot of panel. These figures can, however, vary with the environment and temperature of the geographical area in which the polycrystalline solar cells are installed.
The availability and efficiency of polycrystalline silicone solar cells make it possible for consumers to experience genuine cost saving benefits because the lifespan of these solar cells is comparable to the more expensive mono crystalline variety, and their durability makes it possible for home owners to enjoy their benefits for about twenty-five years and possibly longer.
In today’s world supplementing a home source of power can easily be accomplished with a trouble free solar energy grid composed of solar panels. The cheapest way to get them is to build yourself, you could easily find bulk polycrystalline solar cells for sale on eBay.