Numerical analysis of CdS-CIGS interface configuration on the performances of Cu(In,Ga)Se2solar cells

•The P+ and SDL models eliminate the recombination at the CdS-CIGS interface.•The SDL model electrical parameters are better optimized compared to the P+ model.•The P+ model has huge current-voltage distortion compared to the SDL model.•P+ and SDL models are beneficial in the design of CIGS solar cells.