Concentrator in Photovoltaic Systems

Since a long time, energy has been one of the important problems of humanity. There are various sources to generate energy which fossil fuels are more common, but they are polluting the environment. Today clean and non-polluting energy production has become the most important priority of researchers around the world. There are different methods for producing clean energy, which solar energy has a special site due to the lack of pollutants. The main problem with solar cells is the low efficiency and high cost. The common solar cells have a maximum yield of 20% but there are another category of solar cells that are known as concentrated photovoltaic has a yield of 40% or more. This paper decided to introduce and discuss about the structure, advantages and disadvantages of this group of solar cells.