The influence of the thickness of the Cds emitter layer on the performance of a CIGS solar cell with acceptor defects

Demba Diallo, Alain Kassine Ehemba, Amsata Ndiaye, Mouhamadou Mamour Soce, Moustapha Dieng

In this work, we simulated a solar cell based on CIGS with simple default acceptor, using software (SCAPS) version 3.302 in order to study certain parameters. In particular, we have varied the thickness of the CdS emitter (0.05 μm, 0.04 μm and 0.03 μm) to study its influence on the performance of the cell. We were able to record that the energy efficiency increased from 16.50% for a thickness of 0.05 μm of the emitter to 16.87% for a thickness of 0.03 μm of the emitter. We also noted an improvement in other parameters, such as the form factor from FF = 79.81% to 80.10%, with the decrease in the thickness of the CdS. And from the Nyquist diagram, we also determined parameters like the series resistance to get an idea on the equivalent electrical circuit of the studied cell.