Patent ID: 11967663
Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 24:
25. The solar cell of claim 12, wherein the bifacial operation of the polycrystalline bottom cell creates additional photogenerated current density in the bottom cell, allowing one or more of the following multi-junction solar cell features:
a higher bandgap bottom cell;
a lower bandgap top cell;
upper cells with higher reflectivity or greater light absorption;
interconnect layers between upper cells and/or between the upper cells and the bottom cell with higher reflectivity or greater light absorption;
a bottom cell with lower minority-carrier collection efficiency;
greater multi-junction cell current;
greater multi-junction cell efficiency; and/or
greater multi-junction power output consistency over a wider range of spectral and current mismatch conditions.