a numerical optimization of an efficient double junction ingan/cigs solar cell

An efficient double junction ingan/cigs solar cell can be simulated using silvaco atlas software. in this study, a thin cds top cover layer is used as the anti-reflector layer. to reach the current matching condition, changing the thickness of this cds layer, we can enhance the short-circuit currents of both the top and bottom cells. to gain a desired efficiency, different design parameters, such as the doping concentrations and the thicknesses of the various layers of the cell are optimized. this cell is designed to be used in a real environmental situation. considering the proposed structure and the simulation results, an optimum efficiency of 41.87% is achieved and also the obtained fill factor is equal to 75.16%.