Multijunction Solar Cell Substrate

And a sequence of subcells grown over the substrate with the first grown subcell either being lattice matched or.

Multijunction solar cell substrate.

The strength of the bond will be characterized. The polyimide substrate serves as a permanent lightweight and flexible carrier for the thin multijunction solar cell for space applications. The thin epi layer is transferred to the polyimide wafer. A solar cell comprising a bulk germanium silicon growth substrate.

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. Multijunction solar cells based on iii v materials gallium arsenide gaas aluminum indium phosphide alinp aluminum gallium indium phosphide algainp gallium indium phosphide gainp and indium phosphide inp etc show high efficiency exceeding 35 but due to the high production cost and low availability of their constituents these solar cells are not considered suitable for cost. A diffused photoactive junction in the germanium silicon substrate. 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 maximum theoretical efficiency that a single bandgap solar cell can achieve with non concentrated sunlight is about 33 5 primarily because of. Multijunction solar cells on bulk gesi substrate mar 13 2020 solaero technologies corp.