Numerical Analysis of Lattice-matched InAlAs/InGaAsP/InGaAs based Triple-junction Solar Cell using MATLAB/Simulink

This paper demonstrates numerical simulation of In
_0.37
Al
_0.63
As/In
_0.38
Ga
_0.62
As
_0.57
P
_0.43
/In
_0.38
Ga
_0.62
As based lattice-matched multijunction solar cell (MJSC) in MATLAB/Simulink under AM-1.5D irradiation by assuming low resistance tunnel junction between subcells. The crucial steps of this simulation are illustrated and simulation outcomes are correlated with existing data. Band gap matching, lattice constant matching, and current matching have been checked for the selected materials in order to ensure optical transparency and topmost current conductivity into sub cells. Maximum efficiency of 37% is available from this monolithic triple junction III-V semiconductor solar cell with a short circuit current density of 12.95mA/cm
₂
along with an open circuit voltage of 3.33V under 1-sun irradiation. Finally, layer thickness, doping concentration, and surface recombination velocity are optimized to achieve the best configuration of this MJSC.