Type of PV technologies
A number of PV technologies available are mono-crystalline silicon, poly crystalline silicon, amorphous silicon and other thin film technologies like Cd Te, CIS etc. Out of these, crystalline silicon PV technology is well established and shares about 85% of the world′s PV installations. However, upcoming PV cell technologies like triple junction under concentrated sun, are expected to take up the larger share of the PV market in near future. The main advantage of using mono-crystalline silicon cells is high efficiency which ranges between 15 and 18% at present, C–Si solar cell have achieved record efficiency of 25%, but the complicated manufacturing processes of these cells result in higher costs. Poly-crystalline cells are simple to manufacture, less expensive but with lower efficiencies ranging between 8 and 12%. Amorphous silicon is the most popular thin film technology with efficiency ranges from 5 to 7%. The CdTe, CIS efficiencies ranging between 16 and 20% and triple junction under concentrated sun with
highest efficiency values up to 37.4% are also in the development stage. Extensive research is going on to improve the efficiency of PV cells for the commercial use. The efficiency of the PV cell is one of the key parameters on which the performance of a PV module and system depends, which in turn is influenced by temperature, solar irradiance, dust etc.
highest efficiency values up to 37.4% are also in the development stage. Extensive research is going on to improve the efficiency of PV cells for the commercial use. The efficiency of the PV cell is one of the key parameters on which the performance of a PV module and system depends, which in turn is influenced by temperature, solar irradiance, dust etc.
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