Enhanced Efficiencies for High-Concentration, Multijunction PV Systems by Optimizing Grid Spacing under Nonuniform Illumination

Figure 3

2-D distributed resistance model developed in SPICE showing the two-diode equivalent circuits for each of the subcells where (A) top subcell, (B) middle subcell, and (C) bottom subcell are connected in series using tunnel junctions. An illuminated and a shaded unit form a complete functional block that is repeated times.