Numerical modeling of opto-electric characterization of GaAs/In0.2Ga0.8As nanowire solar cells

Numerical simulation of opto-electric characterization of GaAs/In_0.2Ga_0.8As core-shell nanowire solar cells is presented, using a finite difference time-domain (FDTD) modeling method. The results show that the absorption, external quantum efficiency (EQE) of the NW solar cell strongly depends on NW lengths and diameters, Moreover, the effect of the diameters on the current density-voltage (J-V) of the NW solar cell was calculated.