Multi Junction Solar Cell Solar Panels

A multi junction solar cell is a tandem solar cell with more than one p n junction.

Multi junction solar cell solar panels.

High efficiency multijunction devices use multiple bandgaps or junctions that are tuned to absorb a specific region of the solar spectrum to create solar cells having record efficiencies over 45. A central stage in the development of economic solutions for the industrial use of multi junction solar cells for power generation has been reached. Multi junction solar cells are made of different materials each of which best captures photons of varying wavelengths. These are all single junction solar cells.

The maximum theoretical efficiency that a single bandgap solar cell can achieve with non concentrated sunlight is about 33 5 primarily because of the broad distribution of solar emitted photons. 21 5 cdte cell. Multi junction or stacked solar cells are currently the most efficient cells on the market converting up to 45 of the solar energy they absorb into electricity. Multi junction mj solar cells are solar cells with multiple p n junctions made of different semiconductor materials each material s p n junction will produce electric current in response to different wavelengths of light the use of multiple semiconducting materials allows the absorbance of a broader range of wavelengths improving the cell s sunlight to electrical energy conversion efficiency.

The average commercial crystalline silicon module increased its efficiency from about 12 to 16 percent over the last ten years. In practice this means that there are multiple layers of different semiconductor materials each of which produces electric currents in response to different wavelengths of light. For the first time an efficiency of 25 9 percent has been achieved with a multi junction solar cell grown directly on a silicon substrate. The thin film solar panel may be single or multi junction depending on its material s.

In this manner more sunlight can be converted to electric energy.