In solar technologies, one of the biggest issues lies with the EFFICIENCY of photovoltaic (PV) panels or solar cells. These panels are made using various methods and depending on their production their efficiency and cost are determined.
So far the cheapest solar cells are the thin film type which is used to make flexible panels. This process is cheaper but their efficiency is not that great. It also has the casting of existing silicon crystals into a panel which is the most predominant form of solar cell manufacture but this is more expensive and while efficiency may increase, the costs of these panels is very high. Another method is the creation of silicon crystals which is a man-made process of dissolving them and reforming them only to be thinly sliced and turned into a PV panel. These are the second most competent solar cell with efficiencies closing in on the 15% mark, but they are also consuming to produce which also means are very expensive.
Third type is PV panel in which multiple layers of solar cells stacked on top of each other. The concentrated PV panels can have efficiencies in the range of 40% – 50% which is getting closer to what the world needs, but as stated before, their cost is extremely HIGH; some of them costing well over $10,000 for a single cell – that is too high to afford for everyone.
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