Multijunction Solar Cell Substrate

A diffused photoactive junction in the germanium silicon substrate.

Multijunction solar cell substrate.

The maximum theoretical efficiency that a single bandgap solar cell can achieve with non concentrated sunlight is about 33 5 primarily because of. The polyimide substrate serves as a permanent lightweight and flexible carrier for the thin multijunction solar cell for space applications. 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 polyimide substrate has the advantage of thermal dimensional stability at high temperatures.

The thin epi layer is transferred to the polyimide wafer. A solar cell comprising a bulk germanium silicon growth substrate. The strength of the bond will be characterized. And a sequence of subcells grown over the substrate with the first grown subcell either being lattice matched or.

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. Multijunction solar cells on bulk gesi substrate mar 13 2020 solaero technologies corp.