Abstract:
Unlike general solar cell modeling with AlGaAs in this work AlxGa1-xAs/GaxIn1-xAsyP1-y Multijunction Solar Cell was designed with Ge substrate. Several parameters were then calculated using AMPS-1D and wxAMPS simulation software i.e. Efficiency, Fill Factor, Open circuit voltage (Voc) and Short circuit current density (Jsc) to characterize this solar cell model. It was also shown that a higher bandgap difference between the n and p type materials of the tunnel junction produced a higher efficiency for this design and finally the tunnel junction was optimized. As an extension of this design from two junctions to three and four Junctions, appropriate designs were also proposed using GaAsSb and GaInAs.
